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Renesas ICL7660SIBAT
- Part No.:
- ICL7660SIBAT
- Manufacturer:
- Renesas
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ICL7660SIBAT.pdf
- Description:
- IC REG CHARG PUMP INV 45MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,395
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Product details
Overview
ICL7660SIBAT from Intersil (now Renesas) is a monolithic CMOS charge-pump voltage converter IC that generates regulated negative output voltages from a single positive input supply. It operates across 1.5V–12V input, delivers −1.5V to −12V output, achieves ≥96% power efficiency at 5kΩ load, features a 10kHz nominal oscillator frequency, and includes a BOOST pin (Pin 1) to raise switching frequency for lower output impedance-enabling compact 0.1µF external capacitors in RS-232 or instrumentation power rails.
For engineers reviewing the ICL7660SIBAT datasheet, ICL7660SIBAT pinout, ICL7660SIBAT application, or ICL7660SIBAT equivalent, key selection criteria include its industrial temperature range (−40°C to +85°C), SOIC-8 package compatibility, LV pin configuration for low-voltage optimization, guaranteed 120Ω max output resistance at 20mA, and verified latchup immunity without external diode under full operating conditions.
Technical Context
The ICL7660SIBAT integrates an internal series regulator, RC oscillator, voltage level translator, and four MOS power switches (one P-channel, three N-channel) to implement a two-phase charge-pump topology. Its substrate bias logic network dynamically adjusts S3/S4 body potentials to prevent latchup during startup and short-circuit events.
Oscillator frequency is factory-trimmed to 10kHz at 5V (5–10kHz min–typ range), adjustable via external capacitor on OSC (Pin 7) or overdrive from external clock (with 1kΩ series resistor). The BOOST pin (Pin 1) increases oscillator current, raising frequency ~3.5× to reduce output impedance and ripple-critical for space-constrained designs using small ceramic capacitors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 1.5V to 12V - supports battery-powered sensors (1.5V alkaline) and industrial 12V rails without external regulation |
| Output Voltage | −1.5V to −12V - complementary negative rail matching input magnitude, enabling ±5V or ±12V split supplies |
| Supply Current | ≤180µA at −40°C to +85°C - ultra-low quiescent draw preserves battery life in portable instrumentation |
| Power Efficiency | ≥96% at 5kΩ load - minimizes heat generation and input power waste in thermally constrained enclosures |
| Output Resistance | ≤120Ω at 20mA, −40°C to +85°C - ensures stable regulation under dynamic loads typical in data acquisition front-ends |
| Oscillator Frequency | 5–10kHz (free-running), up to ~35kHz with BOOST pin - selectable trade-off between EMI, capacitor size, and output impedance |
| Temperature Range | −40°C to +85°C - qualified for industrial control, automotive under-hood auxiliary circuits, and outdoor sensor nodes |
Pinout & Package
ICL7660SIBAT is housed in an 8-lead SOIC package (JEDEC MS-012, package drawing M8.15), RoHS-compliant, with 1.27mm lead pitch and standard surface-mount footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (BOOST) | Oscillator current boost control | Connect to V+ to increase oscillator frequency ~3.5×, lowering output impedance and enabling smaller pump capacitors |
| 2 (CAP+) | Charge pump capacitor connection | Anode of primary flying capacitor (C1); polarity-sensitive when using electrolytics (+ to Pin 2) |
| 3 (GND) | Ground reference | System ground return for all internal circuitry and external capacitors |
| 4 (CAP−) | Charge reservoir capacitor connection | Cathode of output reservoir capacitor (C2); ties to GND for negative output configuration |
| 5 (VOUT) | Negative output terminal | Delivers regulated −VIN; must not exceed GND potential to avoid latchup |
| 6 (OSC) | Oscillator timing node | Accepts external capacitor to lower frequency or external clock (via 1kΩ resistor) to override internal oscillator |
| 7 (LV) | Low-voltage mode enable | Tie to GND for 1.5–3.5V operation to bypass internal regulator; leave floating for 3.5–12V to prevent latchup |
| 8 (V+) | Positive input supply | Main power input; absolute max 13V; requires local 2.2µF bypass if source impedance >25Ω |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed 99% open-circuit voltage conversion efficiency | Enables near-ideal negative rail generation with minimal voltage droop under light loads (e.g., op-amp biasing) |
| BOOST pin for higher switching frequency | Allows use of 0.1µF ceramic capacitors instead of 10µF electrolytics-reducing board area and improving reliability |
| Latchup protection without external Schottky diode | Eliminates BOM cost and layout complexity in most applications; external diode required only for V+ >5V with fast-rising inputs |
| LV pin for optimized low-voltage operation | Extends functional range down to 1.5V by disabling internal regulator-critical for single-cell battery systems |
| Industrial temperature qualification (−40°C to +85°C) | Validated performance across full range without derating-suitable for uncontrolled ambient environments |
Applications
| RS-232 Transceiver Power | Negative Supply for Precision ADCs |
|---|---|
Use Scenario: Generating −5V/−12V from a +5V microcontroller UART rail to drive RS-232 line drivers (e.g., MAX232 replacement). IC Role / Device Role / Timing Role: Charge-pump voltage inverter providing isolated negative rail; no timing interface-internal oscillator handles switching. Use Value: Eliminates need for external inductor-based DC/DC converters, reducing EMI and component count while meeting TIA-232 voltage compliance. | Use Scenario: Biasing dual-supply precision analog-to-digital converters (e.g., AD768x) in portable data loggers powered by 3.3V LDOs. IC Role / Device Role / Timing Role: Negative rail generator; operates autonomously with internal 10kHz oscillator-no system clock dependency. Use Value: Delivers ≤120Ω output impedance at 20mA, ensuring <1 LSB error from supply-induced gain drift in 16-bit ADCs. |
| Split-Rail Audio Amplifier Supply | Low-Power Sensor Signal Conditioning |
Use Scenario: Converting a single 9V battery into ±4.5V rails for rail-to-rail op-amps (e.g., OPA167x) in handheld audio analyzers. IC Role / Device Role / Timing Role: Bidirectional voltage splitter; uses internal switch matrix to divide input symmetrically. Use Value: Achieves balanced ±VOUT with <5% mismatch across −40°C to +85°C-maintaining THD+N <0.001% in audio paths. | Use Scenario: Providing −2.5V reference and bias for MEMS pressure sensors and low-noise instrumentation amplifiers in IoT edge nodes. IC Role / Device Role / Timing Role: Low-quiescent negative supply source; LV pin tied to GND enables stable operation from 1.5V coin cells. Use Value: Draws ≤180µA across full temperature range, extending 200mAh CR2032 battery life to >2 years in sleep-mode dominant deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage inverter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX1044CSA+ | Higher max supply current (250µA), fixed 10kHz oscillator, no BOOST pin, requires external diode for latchup immunity below 2.7V | Less suitable for space-constrained layouts needing sub-1µF capacitors; limited low-voltage headroom | Select when legacy MAX1044 footprint reuse is required and BOOST functionality is unnecessary |
| TC7660COA | Wider temp range (−40°C to +125°C), same 1.5–12V input, but only 95% min power efficiency and no LV pin for sub-3.5V operation | Better for under-hood automotive use, but cannot support 1.5V alkaline battery start-up | Prefer for high-temp environments where 1.5V operation is not needed and RoHS compliance is mandatory |
Compared with MAX1044CSA+ and TC7660COA, the ICL7660SIBAT uniquely combines industrial temperature rating, BOOST-enabled low-impedance operation with tiny capacitors, and LV-pin configurable 1.5V capability-making it optimal for next-gen portable instrumentation and RS-232 interfaces where size, efficiency, and wide input range are critical.
Availability
ICL7660SIBAT is available at Aetrix Electronics and suitable for RS-232 transceiver power, precision ADC biasing, and low-power sensor signal conditioning requiring stable component supply across industrial temperature grades.
Supply support for ICL7660SIBAT 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 ICL7660SIBAT belongs to Renesas' legacy Super Voltage Converter product line, engineered specifically for compact, high-efficiency charge-pump voltage inversion in space- and power-constrained embedded systems.
FAQ
What is the maximum input voltage rating for the ICL7660SIBAT?
The ICL7660SIBAT has an absolute maximum supply voltage rating of +13.0V. Operation is specified across 1.5V to 12V, with guaranteed performance up to 12V across the full −40°C to +85°C industrial temperature range. Exceeding 13V risks permanent damage due to internal junction breakdown, and sustained operation above 12V voids parametric guarantees per the FN3179 datasheet.
Does the ICL7660SIBAT require an external Schottky diode for latchup protection?
The ICL7660SIBAT does not require an external Schottky diode for latchup protection under normal operation across its full 1.5V–12V input range and −40°C to +85°C temperature span. An external Schottky diode from VOUT to CAP− is only recommended when the input voltage exceeds 5V and exhibits a rise rate greater than 2V/µs-conditions typically found in poorly filtered switch-mode supplies or hot-plug scenarios.
How does the LV pin affect ICL7660SIBAT operation below 3.5V input?
When the ICL7660SIBAT input voltage is below 3.5V, the LV pin must be tied to GND to bypass the internal series regulator and enable proper low-voltage operation. Leaving LV floating at low input causes excessive dropout and failure to regulate. At 3.5V–12V, LV must remain floating to prevent latchup-this dual-mode behavior is explicitly defined in the FN3179 datasheet's "Detailed Description" section.
Can the ICL7660SIBAT generate positive voltage doubling?
Yes, the ICL7660SIBAT can be configured as a positive voltage doubler delivering up to 22.8V from a 12V input, using the circuit in Figure 18 of the FN3179 datasheet. This configuration repurposes the internal charge-pump switches with external diodes D1 and D2; output source impedance is ~60Ω at 10mA with 5V input, and efficiency remains consistent with negative conversion modes.
What is the guaranteed output resistance of the ICL7660SIBAT at 20mA load?
The ICL7660SIBAT guarantees a maximum output resistance of 120Ω at 20mA load across the full industrial temperature range (−40°C to +85°C), as specified in the "Electrical Specifications" table on page 3 of FN3179 Rev 7.01. This value includes contributions from internal MOSFET RDS(on), switching frequency, and external capacitor ESR-validated under standardized test conditions with C1 = C2 = 10µF.
ICL7660SIBAT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- 10kHz ~ 35kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
ICL7660SIBAT FAQ
1.How can I place an order for ICL7660SIBAT through Aetrix?
Please submit a Request for Quotation (RFQ) for ICL7660SIBAT 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 ICL7660SIBAT reliable?
The price and inventory of ICL7660SIBAT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICL7660SIBAT is usually 5 days.
3.What payment methods are accepted for ICL7660SIBAT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICL7660SIBAT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ICL7660SIBAT?
ICL7660SIBAT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ICL7660SIBAT 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 ICL7660SIBAT?
For technical support, including ICL7660SIBAT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICL7660SIBAT requirements.
6.How does Aetrix verify that ICL7660SIBAT is sourced from the original manufacturer or authorized distributors?
All ICL7660SIBAT 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 ICL7660SIBAT meets industry standards.
7.What is the process for return or replacement of ICL7660SIBAT?
All ICL7660SIBAT units undergo pre-shipment inspection (PSI). If there is an issue with ICL7660SIBAT, 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 ICL7660SIBAT part is unused and in its original packaging.
Return procedure for ICL7660SIBAT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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