My Inquiry
My Account
Renesas ICL7660AIBAZA-T
- Part No.:
- ICL7660AIBAZA-T
- Manufacturer:
- Renesas
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ICL7660AIBAZA-T.pdf
- Description:
- IC REG CHARG PUMP INV 45MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,382
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ICL7660AIBAZA-T from Intersil (now Renesas) is a monolithic CMOS charge-pump voltage converter IC that generates regulated negative output voltages from 1.5V to 12V positive inputs, delivering -1.5V to -12V outputs with only two external capacitors. It features a 10kHz nominal oscillator, Boost pin (Pin 1) for 3.5× frequency scaling, and operates across -40°C to +85°C for industrial RS-232 and data acquisition power rails.
For engineers reviewing the ICL7660AIBAZA-T datasheet, ICL7660AIBAZA-T pinout, ICL7660AIBAZA-T application, or ICL7660AIBAZA-T equivalent, key selection criteria include its guaranteed 96% power efficiency at 5kΩ load, 60Ω typical output source resistance at 20mA, LV pin for low-voltage bypass, and Pb-free SOIC-8 package compatibility with wave soldering.
Technical Context
The ICL7660AIBAZA-T integrates an internal series regulator, RC oscillator, voltage level translator, and four MOS power switches (one P-channel, three N-channel) to implement a switched-capacitor negative voltage conversion topology. Its substrate bias logic network actively senses VOUT to prevent SCR latchup during startup and short-circuit conditions.
Operation supports multiple configurations: inverting mode (VOUT = –VIN), voltage doubling (VOUT ≈ 2VIN), cascaded multiplication, and supply splitting. The BOOST pin enables higher switching frequency to reduce output impedance when using smaller external capacitors-critical for space-constrained industrial instrumentation designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.5V to 12V input; supports direct +5V-to-±5V rail generation without external regulators |
| Oscillator Frequency | 10kHz nominal (free-running at 5V); boosted to ~35kHz when Pin 1 tied to V+ |
| Output Source Resistance | 60Ω typical at 20mA/5V; defines maximum load regulation error and ripple under dynamic current |
| Power Efficiency | 96% minimum at 5kΩ load; ensures minimal thermal rise in enclosed industrial enclosures |
| Operating Temperature | -40°C to +85°C industrial range; validated across full range for data acquisition and sensor front-ends |
| Package | 8-lead SOIC (N), Pb-free, RoHS-compliant; M8.15 footprint compatible with standard reflow/wave processes |
| LV Pin Function | Tie to GND below 3.5V input to bypass internal regulator and improve low-VIN efficiency |
Pinout & Package
ICL7660AIBAZA-T is housed in an 8-lead plastic SOIC (N) package per drawing M8.15, with 1.27mm lead pitch and Pb-free matte tin terminations compliant with IPC/JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (BOOST) | Oscillator frequency control input | Connect to V+ to increase fOSC ~3.5×; reduces output impedance for compact capacitor layouts |
| 2 (CAP+) | Charge pump capacitor connection | Anode of primary pump capacitor C1; polarity critical for polarized electrolytics |
| 3 (GND) | Ground reference | Common return for all internal circuitry and external capacitors; must be low-impedance |
| 4 (CAP–) | Charge reservoir capacitor connection | Cathode of reservoir capacitor C2; connects to VOUT through internal switch network |
| 5 (VOUT) | Negative output terminal | Delivers inverted voltage; requires Schottky diode to CAP– if V+ > 5V and fast-rising input |
| 6 (OSC) | Oscillator timing node | Accepts external capacitor to lower frequency or external clock (via 1kΩ series resistor) |
| 7 (LV) | Low-voltage bypass control | Must be tied to GND for V+ < 3.5V; left floating for 3.5–12V to prevent latchup |
| 8 (V+) | Positive input supply | Primary power input; supplies internal regulator, oscillator, and switch drivers |
Key Features
| Feature | Design Value |
|---|---|
| Boost pin (Pin 1) | Enables 3.5× oscillator frequency increase to reduce output impedance-allows use of 0.1µF instead of 10µF capacitors in space-constrained designs |
| Guaranteed 96% power efficiency | Validated across -40°C to +85°C at 5kΩ load; minimizes self-heating in sealed industrial modules |
| LV pin for low-voltage operation | Bypasses internal regulator below 3.5V input, improving conversion efficiency and enabling 1.5V battery-powered applications |
| SCR latchup protection | Active substrate bias control prevents destructive latchup during startup, short-circuit, or fast-rising V+ transitions |
| Pb-free SOIC-8 packaging | M8.15 footprint with matte tin terminations; qualified for wave soldering and compatible with SnPb and Pb-free assembly |
Applications
| RS-232 Power Supply | Negative Rail for Data Acquisition |
|---|---|
Use Scenario: Generating ±12V from a single +5V microcontroller supply for legacy RS-232 transceivers in industrial gateways. IC Role / Device Role / Timing Role: Charge-pump inverter providing isolated negative rail; no timing synchronization required as internal oscillator suffices. Use Value: Eliminates need for external inductors or transformers-reducing BOM cost and PCB area by >40% versus inductive solutions. |
Use Scenario: Supplying -5V to precision op-amps and ADC reference buffers in portable test equipment operating from 3.3V Li-ion batteries. IC Role / Device Role / Timing Role: Low-noise negative voltage generator; LV pin grounded to maximize efficiency at 3.3V input. Use Value: Achieves 99% open-circuit voltage conversion efficiency, extending battery life while maintaining ±0.1% rail accuracy under light loads. |
| Voltage Splitter for Single-Supply Sensors | Positive Voltage Doubler for LCD Bias |
Use Scenario: Converting +15V DC from a wall adapter into ±7.5V rails to power dual-supply analog front-ends in environmental monitoring nodes. IC Role / Device Role / Timing Role: Bidirectional charge-pump configured as supply splitter; uses shared CAP+ and CAP– nodes for balanced loading. Use Value: Delivers matched ±7.5V rails with <5% imbalance at 5mA load-enabling rail-to-rail input op-amp operation without external trimming. |
Use Scenario: Generating +10V from +5V for LCD segment bias in handheld medical displays where inductor EMI is unacceptable. IC Role / Device Role / Timing Role: Configured as voltage doubler using external diodes; internal switches drive C1 while D2 transfers charge to C2. Use Value: Provides stable +9.2V output (2×5V – 2×VF) with <100mV ripple at 1mA-meeting contrast ratio requirements without magnetic components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ICL7660SIBAZA-T | Wider temperature range (-40°C to +85°C same), but lower max supply voltage (10V vs 12V); 100% tested at 3V vs ICL7660AIBAZA-T's 5V baseline | Preferred for high-reliability 3V systems requiring guaranteed low-IQ performance; less suitable for 12V industrial inputs | Select ICL7660SIBAZA-T when operating near 3V with strict supply current limits; choose ICL7660AIBAZA-T for full 12V input headroom |
| MAX660CPA+ | Higher quiescent current (120µA typ vs 80µA), fixed 10kHz oscillator (no BOOST pin), and different pinout (V+ on Pin 8 vs Pin 8 on ICL7660AIBAZA-T) | Compatible for basic inverting functions but lacks frequency scalability and LV pin flexibility; requires PCB layout change | Use MAX660CPA+ only in legacy designs where pin compatibility is not required and 35kHz boost capability is unnecessary |
Compared with ICL7660SIBAZA-T and MAX660CPA+, the ICL7660AIBAZA-T uniquely combines 12V input tolerance, BOOST-pin frequency scaling, and LV-bypass functionality-making it optimal for industrial systems demanding both wide input range and compact capacitor sizing.
Availability
ICL7660AIBAZA-T is available at Aetrix Electronics and suitable for RS-232 power supplies, data acquisition negative rails, and LCD bias generation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ICL7660AIBAZA-T 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
Renesas Electronics (formerly Intersil) is a global semiconductor leader specializing in analog, mixed-signal, and power management ICs for industrial, automotive, and communications infrastructure.
The ICL7660A product line was designed specifically for low-noise, inductorless DC-DC voltage inversion in space- and cost-constrained industrial instrumentation and interface circuits.
FAQ
What is the function of the LV pin on the ICL7660AIBAZA-T?
The LV pin on the ICL7660AIBAZA-T controls internal regulator bypass: tie it to GND for input voltages below 3.5V to improve low-VIN efficiency and enable 1.5V operation; leave it floating for 3.5–12V inputs to prevent latchup. This dual-mode operation ensures robustness across battery and industrial supply rails without external components.
Can the ICL7660AIBAZA-T generate positive voltage doubling?
Yes, the ICL7660AIBAZA-T can be configured as a positive voltage doubler using external diodes (e.g., Figure 18 in FN3179). With a 5V input, it delivers approximately +9.2V output (2×5V minus two diode forward drops). The internal switches drive the pump capacitor, while external diodes steer charge to the reservoir-enabling inductor-free high-voltage bias generation.
What is the maximum output current capability of the ICL7660AIBAZA-T?
The ICL7660AIBAZA-T delivers up to 20mA continuous output current with ≤120Ω source resistance across -40°C to +85°C. At 10mA and 5V input, typical output resistance is 60Ω-defining worst-case voltage drop of 600mV. For higher currents, paralleling multiple ICL7660AIBAZA-T units reduces effective output impedance proportionally per Equation 6.
Is an external Schottky diode required for the ICL7660AIBAZA-T?
An external Schottky diode from VOUT (Pin 5) to CAP– (Pin 4) is required when the input voltage exceeds 5.5V *and* has a rise rate >2V/µs-common in hot-plug or unregulated industrial supplies. This prevents forward-biasing Q4's body diode and subsequent latchup. For ≤5.5V or slow-rising inputs, the ICL7660AIBAZA-T operates safely without external diodes.
How does the BOOST pin affect capacitor selection in ICL7660AIBAZA-T designs?
Connecting the BOOST pin (Pin 1) to V+ increases the oscillator frequency from 10kHz to ~35kHz, reducing the 1/(fPUMP×C1) term in output impedance. This allows use of 0.1µF pump capacitors instead of 10µF while maintaining equivalent performance-cutting capacitor footprint by 99% and enabling ultra-compact designs for portable instrumentation.
ICL7660AIBAZA-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Ratiometric
- Output Configuration:
- Positive or Negative
- Topology:
- Charge Pump
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 1.5V
- Voltage - Input (Max):
- 12V
- Voltage - Output (Min/Fixed):
- -Vin, 2Vin
- Voltage - Output (Max):
- -
- Current - Output:
- 45mA
- Frequency - Switching:
- 3kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
ICL7660AIBAZA-T FAQ
1.How can I place an order for ICL7660AIBAZA-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ICL7660AIBAZA-T 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 ICL7660AIBAZA-T reliable?
The price and inventory of ICL7660AIBAZA-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICL7660AIBAZA-T is usually 5 days.
3.What payment methods are accepted for ICL7660AIBAZA-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICL7660AIBAZA-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ICL7660AIBAZA-T?
ICL7660AIBAZA-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ICL7660AIBAZA-T 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 ICL7660AIBAZA-T?
For technical support, including ICL7660AIBAZA-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICL7660AIBAZA-T requirements.
6.How does Aetrix verify that ICL7660AIBAZA-T is sourced from the original manufacturer or authorized distributors?
All ICL7660AIBAZA-T 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 ICL7660AIBAZA-T meets industry standards.
7.What is the process for return or replacement of ICL7660AIBAZA-T?
All ICL7660AIBAZA-T units undergo pre-shipment inspection (PSI). If there is an issue with ICL7660AIBAZA-T, 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 ICL7660AIBAZA-T part is unused and in its original packaging.
Return procedure for ICL7660AIBAZA-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ICL7660AIBAZA-T 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
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
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…
