ST2159 1A Current-Mode PWM Boost Converter

Name: ST2159 1A Current-Mode PWM Boost Converter
Brand: STST
SKU: ST2159

ST2159

The ST2159 is a current-mode PWM boost DC-DC converter operating from a 2.5V~5.5V input. Its PWM circuitry with a built-in 0.18Ω, 2A/16V power MOSFET makes this regulator highly power efficient, while the internal compensation network minimizes as many as 6 external component counts. The non-inverting input of the error amplifier connects to a 0.6V precision reference (±2% accuracy), the output is adjustable up to 12V, the internal fixed PWM frequency is 650KHz, and the internal soft-start function reduces inrush current with only 0.1μA shutdown current. With 165°C over-temperature protection in a compact SOT23-6 package, it is widely used in chargers, LCD displays, digital cameras, handheld devices and portable products.

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Specifications

Input Voltage (VIN)2.5V~5.5V

Output Current (Typ.)1A

Modulation ModePWM (current mode)

Output Voltage (VOUT)Adjustable up to 12V (ref 0.6V)

FB/VOUT Accuracy±2% (reference accuracy)

Oscillation Frequency (Typ.)650KHz (0.5~0.8MHz)

Power MOS CharacteristicsBuilt-in power MOSFET: RDS(on)=0.18Ω, 2A/16V

PackageSOT23-6

Product details

Overview

The ST2159 is a current mode boost DC-DC converter. Its PWM circuitry with a built-in 0.18Ω power MOSFET makes this regulator highly power efficient. The internal compensation network also minimizes as much as 6 external component counts. The non-inverting input of the error amplifier connects to a 0.6V precision reference voltage and the internal soft-start function can reduce the inrush current.

Features

Precision feedback reference voltage: 0.6V
Reference voltage accuracy: ±2%
Adjustable output up to 12V
Internal fixed PWM frequency: 650KHz
Internal 0.18Ω, 2A, 16V power MOSFET
Shutdown current: 0.1μA
Over temperature protection: 165°C
Package: SOT23-6