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ISSI IS32PM3426 | Demoboard IS32PM3426 DEMO BOARD
3.8V TO 36V, 2A, 2.2MHZ, SYNCHRONOUS STEP-DOWN VOLTAGE REGULATOR
Overview
| Topology | Other Topology |
| Input voltage | 3.8-36 V |
| Output 1 | 24 V |
| IC revision | 0A |
Description
The IS32PM3426 regulator is an automotive focused high-performance synchronous step-down DC-DC converter that can drive a load current of up to 2A. It can operate within an input voltage range of 3.8V to 36V. The IS32PM3426 provides exceptional efficiency, output accuracy and drop-out voltage in a very small solution size. Constant on-time control mode is employed to achieve simple control-loop compensation and fast transient response. The IS32PM3426 supports both Forced Continuous Conduction Mode (FCCM) and Pulse Frequency Modulation mode (PFM) at light-load condition, which is selected by the FPWM pin. It requires few external components. Pin arrangement allows simple, optimum PCB layout. Protection features include thermal shutdown, VDD under-voltage lockout, cycle-by-cycle current limit, over-voltage and output short-circuit protection.
Features
- Input voltage range from 3.8V to 36V
- 1μA (Typ.) shutdown current
- 25μA quiescent current (typical, no switching)
- Up to 2A output current capability
- Adjustable output voltage, 1V to 24V
- Output regulation accuracy:
- ±1% at 25°C
- ±2% over -40°C ~150°C
- 93% efficiency at full load (5V/2A)
85% efficiency at light load (5V/100mA)
- Integrated synchronous rectifier
- Operating frequency range: 100kHz to 2.2MHz
- Programmed by a single resistor
- Synchronized to external clock
- Pin-selectable FCCM or PFM operation mode
- Spread spectrum to minimize EMI
- Few external components
- Internal loop compensation
- Internal soft-start
- Power good flag output
- Fault protections
- Cycle by cycle current limit
- Precision enable to program system UVLO
- Output short-circuit protection with hiccup mode
- Output over-voltage protection
- VDD under-voltage lockout
- Thermal shutdown protection
- Operating junction temperature range from -40°C ~ +150°C
- WFCQFN-14 (3mm × 4mm) compact package
Typical applications
- Automotive LED lighting system, Automotive body electronics
- General-purpose power supply
More information
Products
Order Code | Datasheet | Downloads | Status | Product series | L(µH) | Tol. L | IRP,40K(A) | IR,40K(A) | ISAT,30%(A) | fres(MHz) | ISAT,10%(A) | Mount | RDC typ.(mΩ) | Material | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-XHMA SMD Power Inductor, 4.7 µH, ±20% | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-XHMA SMD Power Inductor | Inductance4.7 µH | Inductance±20% | Performance Rated Current5.8 A | Rated Current4.7 A | Saturation Current @ 30%10.5 A | Self Resonant Frequency28 MHz | Saturation Current @ 10%3.7 A | MountSMT | DC Resistance31 mΩ | MaterialHyperflux | |||
| WE-XHMA SMD Power Inductor, 10 µH, ±20% | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-XHMA SMD Power Inductor | Inductance10 µH | Inductance±20% | Performance Rated Current6.4 A | Rated Current5 A | Saturation Current @ 30%9.7 A | Self Resonant Frequency18 MHz | Saturation Current @ 10%5.05 A | MountSMT | DC Resistance26.5 mΩ | MaterialHyperflux |