UM1666S-LED背光驱动升压型转换器-开关稳压器-电源供应-英联产品-英联

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UM1666S
具有600mA峰值电流限制的PFM模式升压型DC-DC转换器

Datasheet

Reliability Report

Package Information

	Outline-SOT23-5.pdf
	Land Pattern-SOT23-5.pdf

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Key Specifications

Part Number

Description

Status

Channels(.)

Vin (Min)(V)

Vin (Max)(V)

Vout (Min)(V)

Vout (Max)(V)

Isw (Peak)(A)

Switching Frequency(Max)(kHz)

Type

LED Current Per Channel(mA)

LED(.)

Topology

Duty Cycle(Max)(%)

Shutdown Current(Max)(μA)

Peak Efficiency(%)

Operating Temperature Range(°C)

Pin/Package

EV Kit Available?

UM1666S

具有600mA峰值电流限制的PFM模式升压型DC-DC转换器

ACTIVE

0.6

1000

Inductive

Boost

-40 to 85

5/SOT23

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Product Description

The UM1666 is a PFM controlled step-up DC-DC converter with a switching frequency up to 1MHz. The device is ideal to generate output voltage for small to medium LCD bias supplies and white LED backlight supplies from a single cell Li-Ion battery. The part can also be used to generate standard 3.3V/5V to 12V power conversions.

With a high switching frequency of 1MHz, a low profile and small board area solution can be achieved using a chip coil and an ultra small ceramic output capacitor. The UM1666 has an internal 600mA switch current limit, offering lower output voltage ripple. The low quiescent current (typically 36µA) together with an optimized control scheme, allows device operation at very high efficiencies over the entire load current range.

Features

- 2.0V to 6.0V Input Voltage Range

- Adjustable Output Voltage up to 28V

- 600mA Internal Switch Current

- Up to 1MHz Switching Frequency

- 36µA Typical No Load Quiescent Current
- 1µA Maximum Shutdown Current

- Internal Soft-Start

- Available in Tiny SOT23-5 and DFN6L 2.0×2.0 Packages

Typical Application Circuit