Datasheet > BD8151EFV_09

BD8151EFV_09

更新时间： 2022-12-20 11:13:36

品牌	Logo	应用领域
罗姆 - ROHM		放大器
页数	文件大小	规格书
18页	499K
描述
Single-channel Source Voltage Output Power Supply + Gamma Buffer Amp ICs

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BD8151EFV_09 数据手册

Power Supply IC Series for TFT-LCD Panels

Single-channel Source Voltage

OutputPowerSupply+GammaBufferAmpICs

BD8151EFV,BD8157EFV

No.09035EBT11

●Description

The BD8151EFV,BD8157EFV power supply IC are designed for use with TFT-LCD panels. It incorporates a built-in source

voltage step-up switching regulator and gamma correction buffer amp. The combination of a source power supply and

gamma correction buffer on a single chip delivers significant cost savings.

Compatible with input voltages from 2.5 V to 5.5 V (BD8151EFV), 2.1 V to 4.0 V (BD8157EFV), the IC supports low-voltage

operation and reaches over 85% efficiency with a 2.5 V input, contributing to low power consumption designs.

●Features

1) Single-chip implementation of a source power supply and gamma correction buffer

2) Support for low-voltage operation, with input voltages from 2.5 V to 5.5 V (BD8151EFV)

2.1 V to 4.0 V (BD8157EFV)

3) Built-in 1.4 A, 0.2  low-voltage FET

4) Switchable step-up DC/DC switching frequencies: 600 kHz/1.2 MHz

5) Current mode PWM control

6) Under-voltage lockout protection circuit

7) Built-in overcurrent protection circuit

8) Built-in thermal shutdown circuit

●Applications

Satellite navigation systems, laptop PC TFT LCD panels

LCD monitor panels

●Absolute maximum ratings (Ta = 25℃)

Parameter

Power supply voltage

Symbol

Vcc

Limit

Unit

Power dissipation

1000*

−40 to +85

−40 to +125

−55 to +150

1.5**

BD8151EFV

BD8157EFV

Operating temperature range

Topr

℃

Storage temperature range

Switching pin current

Switching pin voltage

VS voltage

Tstg

Isw

℃

Vsw

Maximum junction temperature

Tjmax

150

°C

* Reduced by 8 mW/℃ over 25℃, when mounted on a glass epoxy board (70 mm x 70 mm x 1.6 mm).

** Must not exceed Pd.

●Recommended Operating Ranges (Ta = 25℃)

Limit

Typ.

3.3

2.5

—

Parameter

Symbol

Unit

Min.

2.5

2.1

—

Max.

5.5

4.0

1.4

Power supply voltage BD8151EFV

Power supply voltage BD8157EFV

Switching current

Vcc

ISW

VSW

Switching pin voltage

—

VS pin voltage

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2009.07 - Rev.B

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