AT1865 datasheet(1/1 Pages) GMT

Part #	AT1865

Description	41 Channel DC-DC converter for DV

PDF	1 Pages

Scroll/Zoom	100%

Manufacturer	GMT [Global Mixed-mode Technology Inc]

Direct Link	http://www.gmt.com.tw

Logo

1 / 1 page

Ver: 0.3

Mar 17, 2010

TEL: 886-3-5788833

http://www.gmt.com.tw

1

AT1865

Global Mixed-mode Technology Inc.

4+1 Channel DC-DC converter for DV

Features

1.8V ~ 5.5V BAT Input Voltage Operation.

3.0V ~ 5.5V VCC Input Voltage Operation.

95% Efficient DC/DC Converter.

Combine Step-Up and Step-Down for 90% Effi-

cient Boost-Buck and Buck-Boost.

Highly Integrated 4+1 CH DC/DC with inte-

grated Power MOSFETs.

CH2 Selectable Buck or Boost for Li-ion Bat-

tery Application.

4 Channel Built-in Synchronous Rectified Cur-

rent-Mode PWM Converters.

Low Power Consumption (Sleep Mode) <10uA.

Built-In Short-circuit Protection (SCP) and

Over Current Protection (OCP) for MOSFETs.

Built-In Over Voltage Protection (OVP) and

Over Load Protection (OLP).

Built-In Soft-Start Function.

Built-In Power ON/OFF Sequence Control.

Built-In RTC LDO

Built-In RESET function

Fixed 1MHz Operating Frequency.

TQFN28 Package (4mm x 4mm).

General Description

The AT1865 provide a complete power supply solution

for digital video. They improve performance, compo-

nent count, and size compared to other multi-channel

controllers in 1-cell Li-Ion battery designs. On-chip

MOSFETs provide up to 92~95% efficiency for critical

power supplies. Channel 1/2/3/4 operate at one fixed

frequency of 1MHz to optimize size, cost, and effi-

ciency. Channel 5 operate as LDO.

Applications

DV

Ordering Information

ORDER

NUMBER

MARKING

TEMP.

RANGE

PACKAGE

(Green)

AT1865RV1U

A1865

0°C to +85°C

TQFN4X4-28

Note: RV: TQFN4X4-28

1: Bonding Code

U: Tape & Reel

Pin Configuration

AT1865 TQFN4X4-28

LX3

RESET

CT

VREF

AGND

VCC

LX1

RTC_IN

RTC_OUT

VOUT5

PVCC5

CTL5

1

2

3

4

5

6

16

17

18

19

20

21

7

LX4

15

LX2

Note: Recommend connecting the Thermal Pad to

the Ground for excellent power dissipation.

Thermal

Pad

AT1865 TQFN4X4-28

LX3

RESET

CT

VREF

AGND

VCC

LX1

RTC_IN

RTC_OUT

VOUT5

PVCC5

CTL5

1

2

3

4

5

6

16

17

18

19

20

21

7

LX4

15

LX2

Note: Recommend connecting the Thermal Pad to

the Ground for excellent power dissipation.

Thermal

Pad

CH1

Synchronous Rectified

Current Mode Step-Up

CH2

Selectable

Synchronous Rectified

Current Mode Step-

Up/Step-Down

CH3

Synchronous Rectified

Current Mode Step-

Down

CH4

Synchronous Rectified

Current Mode Step-

Down

CH5

LDO

AT1865

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