UP1589Q Datasheet – Laptop IC For Power Supply Controller

This is one of the controller types.

Part Number: UP1589Q, UP1589QQKF

Function: High Efficiency, Main Power Supply Controller

Package:  QFN-20 Pin Type

Manufacturer: UPI Semiconductor

See the preview image and the PDF file for more information.

Image

UP1589Q datasheet

Description

The UP1589Q is a dual step down, Switch Mode Power Supply (SMPS) controller which generates logic supply voltages for battery powered systems. It includes two Pulse Width Modulation (PWM) controllers adjustable from 2V to 5.5V and also two fixed 5V/3.3V linear regulators. One of the controllers (LDO5) provides automatic switch over to the BYP1 input connected to the main SMPS1 output for maximized efficiency.

Pinout ( = RT8239B )

UP1589Q pinout

Features

1. Fast Load Transient Response

2. Current Mode Option Supports Ceramic Output Capacitors

UP1589Q Applications

1. Notebook computers
2. System Power Supplies
3. 3- and 4- Cell Li+ Battery-Powered Device

UP1589Q Datasheet

UP1590 Datasheet

UP1590 pdf

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HT4936S Datasheet – Mobile Power Management Chip

HT4936S is Mobile Power Management Chip.

Part Number: HT4936

Function: N-Channel 22-V (D-S) 175°C MOSFET

Package: SOP 16 type

Manufacturer: HOTCHIP

Images:

HT4936S-power-management-chip

Description

The HT4936S is a monolithic, mobile power management chip that uses advanced charge-and-discharge port sharing and synchronous rectification with low external components and excellent performance. Form a good 1A-in / 1A-out 4LEDs mobile power.

Circuit

HT4936S-circuit

Features

1. Built-in maximum 1A linear charging mode, charging current adjustable externally;

2. trickle / constant current / constant voltage three-stage charging, 4.20V / 4.35V optional support 0V battery charge;

3. built-in charging can automatically reduce the charging current according to temperature rise, 130 degrees began to decline, the minimum can be reduced to 0;

4.step-up using synchronous rectification circuit, the highest efficiency over 90%, low heat, fixed 5.1V output, do not need external Resistance setting

5. Boost output current 1A (BTP = 3.6V);

6. With constant power output function, a complete over current, short circuit protection, built-in temperature protection automatically stop temperature rise over-temperature;

Pinout
HT4936S-datasheet-pinout

HT4936S Datasheet

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