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BD8157EFV-E2

Description
LCD Drivers SOURCE VOLTAGE SINGLE-CHANNEL
CategoryPower/power management    The power supply circuit   
File Size633KB,20 Pages
ManufacturerROHM Semiconductor
Websitehttps://www.rohm.com/
Environmental Compliance
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BD8157EFV-E2 Overview

LCD Drivers SOURCE VOLTAGE SINGLE-CHANNEL

BD8157EFV-E2 Parametric

Parameter NameAttribute value
Is it lead-free?Lead free
Is it Rohs certified?conform to
MakerROHM Semiconductor
Parts packaging codeTSSOP
package instructionVSSOP, TSSOP20,.25
Contacts20
Reach Compliance Codecompliant
ECCN codeEAR99
Factory Lead Time10 weeks
Analog Integrated Circuits - Other TypesSWITCHING REGULATOR
control modeCURRENT-MODE
Control TechnologyPULSE WIDTH MODULATION
Maximum input voltage4 V
Minimum input voltage2.1 V
Nominal input voltage2.5 V
JESD-30 codeR-PDSO-G20
length6.5 mm
Number of functions1
Number of terminals20
Maximum operating temperature125 °C
Minimum operating temperature-40 °C
Maximum output current1.5 A
Package body materialPLASTIC/EPOXY
encapsulated codeVSSOP
Encapsulate equivalent codeTSSOP20,.25
Package shapeRECTANGULAR
Package formSMALL OUTLINE, VERY THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)NOT SPECIFIED
power supply2.5,9 V
Certification statusNot Qualified
Maximum seat height1 mm
Maximum supply current (Isup)2.4 mA
surface mountYES
Switch configurationBOOST
Maximum switching frequency1440 kHz
Temperature levelAUTOMOTIVE
Terminal formGULL WING
Terminal pitch0.65 mm
Terminal locationDUAL
Maximum time at peak reflow temperatureNOT SPECIFIED
width4.4 mm
Power Supply IC Series for TFT-LCD Panels
Single
-channel Source Voltage
Output Power Supply + Gamma Buffer Amp ICs
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
Power dissipation
Operating temperature range
Storage temperature range
Switching pin current
Switching pin voltage
VS voltage
Maximum junction temperature
BD8151EFV
BD8157EFV
Symbol
Vcc
Pd
Topr
Tstg
Isw
Vsw
VS
Tjmax
Limit
7
1000*
−40
to +85
−40
to +125
−55
to +150
1.5**
15
15
150
Unit
V
mW
A
V
V
°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℃)
Parameter
Power supply voltage BD8151EFV
Power supply voltage BD8157EFV
Switching current
Switching pin voltage
VS pin voltage
Symbol
Vcc
Vcc
ISW
VSW
VS
Limit
Min.
2.5
2.1
5
Typ.
3.3
2.5
9
Max.
5.5
4.0
1.4
14
14
Unit
V
V
A
V
V
www.rohm.com
© 2009 ROHM Co., Ltd. All rights reserved.
1/17
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