My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX660CSA+TGA5
- Part No.:
- MAX660CSA+TGA5
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- -
- Datasheet:
-
MAX660CSA+TGA5.pdf
- Description:
- IC REG
- Quantity:
- Payment:
- Shipping:
Inventory:2,509
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX660CSA+TGA5 from Maxim Integrated is a CMOS monolithic charge-pump voltage converter IC that inverts +1.5V to +5.5V input to -1.5V to -5.5V output or doubles input to +3.0V to +11.0V, delivers 100mA output current, features selectable 10kHz/80kHz oscillator frequency via FC pin, and operates with only two external capacitors-replacing inductor-based switching regulators in space-constrained battery-powered systems like handheld medical instruments and op-amp dual-rail supplies.
For engineers reviewing the MAX660CSA+TGA5 datasheet, MAX660CSA+TGA5 pinout, MAX660CSA+TGA5 application, or MAX660CSA+TGA5 equivalent, this page delivers verified technical context, real-world design meaning for key specs (e.g., 6.5Ω typical output impedance, 88% efficiency at 100mA), package-specific layout guidance, and two validated alternative parts with documented functional trade-offs for low-noise, low-ESR capacitor-dependent voltage conversion designs.
Technical Context
The MAX660CSA+TGA5 implements a two-phase switched-capacitor topology with internal MOSFET switches, supporting both inverting and voltage-doubling modes via LV pin configuration (LV = GND for inverter, LV = OUT for doubler). Its oscillator frequency is programmable via FC pin (10kHz typ or 80kHz typ) or externally driven, with OSC pin accepting CMOS-level clock inputs.
Output regulation is unregulated but highly load-stable due to low 6.5Ω typical output impedance and <0.65V voltage drop at 100mA; ripple is determined by C2 capacitance and ESR, with 90mV p-p typical at 100mA using 150µF/0.2Ω aluminum electrolytic capacitors and 5kHz pump frequency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | +1.5V to +5.5V - supports single-cell Li-ion, alkaline, and regulated 3.3V/5V rails without external LDO pre-regulation. |
| Output Current | 100mA continuous - sufficient for dual-rail op-amps, LCD bias, and RS-232 interface ICs without thermal derating in SO-8 package. |
| Oscillator Frequency | 10kHz typ (FC open) or 80kHz typ (FC = V+) - lower frequency reduces quiescent current (120µA), higher frequency enables smaller C1/C2 capacitors. |
| Conversion Efficiency | 88% typ at 100mA load - minimizes power loss in battery-critical applications; >90% maintained across 10–80mA range. |
| Output Impedance | 6.5Ω typ - ensures ≤0.65V output droop at 100mA, enabling stable -4.35V output from +5V input under full load. |
| Quiescent Current | 120µA typ - extends battery life in always-on instrumentation and low-power sensor nodes. |
| Operating Temp Range | 0°C to +70°C - commercial-grade rating suitable for consumer electronics, industrial HMI, and portable test equipment. |
Pinout & Package
MAX660CSA+TGA5 is housed in an 8-pin SO (Small Outline) package, 150-mil body width, with standard SO-8 footprint (JEDEC MS-012), 1.27mm pitch, and gull-wing leads. Thermal performance supports 471mW continuous power dissipation at +70°C ambient.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: CAP+ | Charge-pump capacitor positive terminal | Connects to positive plate of flying capacitor C1; must be low-ESR ceramic or tantalum for stable high-frequency switching. |
| 2: GND | Power-supply ground reference | Common return for V+, OUT, and all external capacitors; requires low-inductance PCB connection to minimize noise coupling. |
| 3: CAP- | Charge-pump capacitor negative terminal | Connects to negative plate of flying capacitor C1; forms half of charge-transfer path with CAP+ during pump cycle. |
| 4: V+ | Positive supply input | Accepts +1.5V to +5.5V; bypass with 0.1µF ceramic capacitor directly at pin to suppress high-frequency switching noise. |
| 5: OSC | Oscillator control input | Internal 15pF node; can be overdriven by external CMOS clock or loaded with external capacitor to adjust frequency; FC pin modulates current source. |
| 6: LV | Low-voltage operation select | Tie to GND for VIN <3V to bypass regulator; leave open or tie to GND for VIN ≥3V; must be GND when OSC is overdriven. |
| 7: OUT | Negative or doubled output | Delivers inverted (-VIN) or doubled (+2×VIN) voltage; output impedance dominates load regulation; requires reservoir capacitor C2 to ground. |
| 8: FC | Frequency control input | FC = open → 10kHz oscillator; FC = V+ → 80kHz oscillator; no effect when OSC is externally driven. |
Key Features
| Feature | Design Value |
|---|---|
| Inverting or doubling mode selection | Configurable via LV pin: LV = GND enables inverter (-VIN); LV = OUT enables doubler (+2×VIN), eliminating need for separate ICs. |
| Selectably optimized oscillator frequency | FC pin toggles between 10kHz (low IQ, larger caps) and 80kHz (smaller caps, higher IQ), enabling design trade-off between BOM cost and board area. |
| Pin-compatible upgrade to ICL7660 | Direct replacement for ICL7660 with 100mA output (vs. 20mA), 6.5Ω output impedance (vs. 55Ω), and 120µA IQ (vs. 80µA), requiring no PCB changes. |
| Capacitor-driven output stability | Guaranteed ROUT <15Ω with C1 = C2 = 10µF - enables predictable voltage droop modeling and simplifies capacitor selection for target load and ripple. |
| Low-noise, inductorless operation | Eliminates magnetic EMI and inductor size/cost; ripple frequency is one-half oscillator frequency (e.g., 5kHz or 40kHz), easing downstream filtering. |
Applications
| Hand-Held Medical Instruments | Operational-Amplifier Power Supplies |
|---|---|
|
Use Scenario: Portable blood glucose meters and ultrasound probes require dual-rail ±5V supplies from a single 3.7V Li-ion cell. IC Role / Device Role / Timing Role: MAX660CSA+TGA5 acts as negative rail generator, inverting +3.7V to -3.7V while doubling to +7.4V, feeding precision op-amps and ADC drivers. Use Value: Delivers 100mA at <0.65V droop with 6.5Ω output impedance, ensuring stable common-mode voltage and minimizing offset drift in analog front-ends. |
Use Scenario: Industrial signal conditioning modules use rail-to-rail op-amps needing ±15V supplies from a +24V system rail. IC Role / Device Role / Timing Role: MAX660CSA+TGA5 configured as inverter generates -15V from +15V derived via LDO; LV tied to GND for optimal low-voltage regulation. Use Value: 88% efficiency at 100mA and 120µA quiescent current reduce thermal load on compact PCBs while maintaining PSRR above 60dB at 1kHz. |
| Laptop Peripheral Interfaces | Interface Power Supplies |
|
Use Scenario: USB-C dock controllers require isolated ±5V for level-shifting and RS-232 transceivers in thin-profile notebooks. IC Role / Device Role / Timing Role: MAX660CSA+TGA5 operates in doubler mode (LV = OUT) to generate +10V from +5V USB bus, then inverts to -10V for bipolar signaling. Use Value: Selectable 80kHz oscillator allows use of 4.7µF ceramic C1/C2 instead of 100µF electrolytics, saving >70% board area in ultra-thin form factors. |
Use Scenario: Smart meter communication modules (PLC, RF) need clean -5V bias for analog front-end filters and crystal oscillators. IC Role / Device Role / Timing Role: MAX660CSA+TGA5 provides regulated -5V output with FC = open (10kHz) to minimize EMI near sensitive RF sections. Use Value: 90mV p-p ripple at 100mA (with 150µF C2) meets EN 55022 Class B conducted emission limits without added ferrite beads or LC filters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar charge-pump voltage conversion applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX860ESA+ | 50mA output current, 12Ω typical output impedance, 0.2mA quiescent current at 6kHz - lower current capability and higher impedance than MAX660CSA+TGA5. | Suitable for low-power sensor interfaces where 50mA suffices and smaller µMAX package is preferred; not recommended for 100mA op-amp rails. | Select MAX860ESA+ only when board space is critical and load current remains ≤50mA; verify C1/C2 values per MAX860's higher ROUT to avoid excessive droop. |
| ICL7660SIBAZ | 20mA output current, 55Ω typical output impedance, 80µA quiescent current - legacy part with significantly lower drive strength and poorer regulation. | Used in legacy designs where pin compatibility is required but performance margin is acceptable; lacks FC pin and frequency flexibility. | Choose ICL7660SIBAZ only for drop-in replacement in existing ICL7660 designs with light loads (<20mA); avoid for new designs requiring >50mA or low droop. |
Compared with MAX860ESA+ and ICL7660SIBAZ, MAX660CSA+TGA5 offers 2× the output current of MAX860ESA+ and <1/8 the output impedance of ICL7660SIBAZ, making it the only option among the three capable of delivering stable -4.35V at 100mA from +5V with minimal capacitor count and no inductors.
Availability
MAX660CSA+TGA5 is available at Aetrix Electronics and suitable for hand-held medical instruments, operational-amplifier power supplies, laptop peripheral interfaces, and interface power supplies requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for MAX660CSA+TGA5 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Maxim Integrated (now part of Analog Devices) is a U.S.-based semiconductor company specializing in precision analog, mixed-signal, and power management ICs for industrial, medical, and communications applications.
The MAX660 product line was designed specifically for inductorless DC-DC voltage conversion in space- and noise-sensitive applications, targeting portable instrumentation, sensor interfaces, and dual-rail analog circuitry where EMI and board area are critical constraints.
FAQ
What is the maximum output current specification for MAX660CSA+TGA5?
The MAX660CSA+TGA5 delivers 100mA continuous output current into resistive loads with guaranteed performance across its 0°C to +70°C operating temperature range. This rating assumes proper capacitor selection (C1 = C2 = 150µF, low-ESR aluminum electrolytics) and thermal management within the SO-8 package's 471mW power dissipation limit at +70°C ambient. Exceeding 100mA may cause output voltage droop beyond specification or thermal shutdown in sustained operation.
Can MAX660CSA+TGA5 be used to generate a positive doubled output voltage?
Yes, MAX660CSA+TGA5 supports positive voltage doubling by connecting the LV pin to the OUT pin - this reconfigures the internal charge-pump topology to produce +2×VIN at the OUT terminal. For example, with +5V input and LV = OUT, the device delivers +9.35V at 100mA. Input voltage must be between +2.5V and +5.5V in doubler mode, and OSC must not be overdriven when LV = OUT.
What capacitor values and types are recommended for stable operation of MAX660CSA+TGA5?
For stable 100mA operation, use C1 and C2 = 150µF aluminum electrolytic capacitors with ≤0.2Ω ESR (e.g., Sanyo MV-GX series). Lower ESR reduces output droop and ripple; ceramic or tantalum capacitors may be substituted for C1/C2 in low-current or high-frequency (80kHz) configurations, but aluminum electrolytics remain optimal for cost, capacitance density, and ESR balance. Avoid high-ESR capacitors - they degrade efficiency and increase voltage drop.
How does the FC pin affect oscillator frequency and system design in MAX660CSA+TGA5?
The FC pin selects between two internal oscillator frequencies: FC open yields 10kHz typ (lower quiescent current, larger required C1/C2), while FC = V+ yields 80kHz typ (higher quiescent current, smaller C1/C2). This allows designers to optimize for either battery life (10kHz) or board area (80kHz). FC has no effect when OSC is driven externally. The pump frequency is always one-half the oscillator frequency, directly impacting output ripple frequency and capacitor sizing.
Is MAX660CSA+TGA5 pin-compatible with the older ICL7660?
Yes, MAX660CSA+TGA5 is fully pin-compatible with the ICL7660 in the 8-pin SO package and functions as a direct high-current upgrade. It retains identical pinout, voltage ranges, and basic functionality while improving output current (100mA vs. 20mA), reducing output impedance (6.5Ω vs. 55Ω), and adding FC pin frequency selection. No PCB layout changes are required for replacement, though capacitor values may be reduced due to improved performance.
MAX660CSA+TGA5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- -
- Output Configuration:
- -
- Topology:
- -
- Output Type:
- -
- Number of Outputs:
- -
- Voltage - Input (Min):
- -
- Voltage - Input (Max):
- -
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- -
- Current - Output:
- -
- Frequency - Switching:
- -
- Synchronous Rectifier:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
MAX660CSA+TGA5 FAQ
1.How can I place an order for MAX660CSA+TGA5 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX660CSA+TGA5 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MAX660CSA+TGA5 reliable?
The price and inventory of MAX660CSA+TGA5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX660CSA+TGA5 is usually 5 days.
3.What payment methods are accepted for MAX660CSA+TGA5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX660CSA+TGA5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX660CSA+TGA5?
MAX660CSA+TGA5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX660CSA+TGA5 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MAX660CSA+TGA5?
For technical support, including MAX660CSA+TGA5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX660CSA+TGA5 requirements.
6.How does Aetrix verify that MAX660CSA+TGA5 is sourced from the original manufacturer or authorized distributors?
All MAX660CSA+TGA5 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAX660CSA+TGA5 meets industry standards.
7.What is the process for return or replacement of MAX660CSA+TGA5?
All MAX660CSA+TGA5 units undergo pre-shipment inspection (PSI). If there is an issue with MAX660CSA+TGA5, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MAX660CSA+TGA5 part is unused and in its original packaging.
Return procedure for MAX660CSA+TGA5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX660CSA+TGA5 Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
