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ISSI IS32PM3427 | Demoboard IS32PM3427 DEMO BOARD
3.8V TO 36V, 4A, 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 IS32PM3427 regulator is an easy-to-use synchronous step-down DC-DC converter capable of driving up to 4A of load current from an input voltage ranging of 3.8V to 36V. The IS32PM3427 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 controlloop compensation and fast transient response. The IS32PM3427 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, cycleby- cycle current limit, over-voltage and output shortcircuit protection.The IS32PM3427 device is available in the WFCQFN- 14 (3mm × 4mm) package.
Features
- Input voltage range from 3.8V to 36V
- 1µA (Typ.) shutdown current
- 25µA quiescent current (typical, no switching)
- Up to 4A output current capability
- Adjustable output voltage, 1V to 24V
- Output regulation accuracy
- 93% efficiency (5V/3A)
91% efficiency at light load (5V/100mA)
- Integrated 80mΩ High-Side and 40mΩ Low-Side MOSFETs
- Pin-selectable FCCM or PFM operation mode
- Spread spectrum to minimize EMI
- Few external components - Internal loop compensation Internal soft-start
- AEC-Q100 Qualified with Temperature Grade 1: -40°C to 125°C
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, 5.6 µH, ±20% | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-XHMA SMD Power Inductor | Inductance5.6 µH | Inductance±20% | Performance Rated Current8.9 A | Rated Current6.9 A | Saturation Current @ 30%12.1 A | Self Resonant Frequency25 MHz | Saturation Current @ 10%5.8 A | MountSMT | DC Resistance15 mΩ | MaterialHyperflux |