LMR70503,LMR70503TMNOPB,LMR70503TMXNOPB

Part No.:
LMR70503,LMR70503TMNOPB,LMR70503TMXNOPB
Download:
Download
Description:
SIMPLE SWITCHER® Buck-Boost Converter For Negative Output Voltage in μSMD
File Size:
2434 K
Page:
19 Pages
Logo:
Maker:
TI [ TEXAS INSTRUMENTS ]
PCB Prototype

July 19, 2018:

LMZ1601-7R

LMZ30604

LNK406EG

LP08

LPC1114FHN33/201

LQFP

LT3782EFE

LTC1041

LTC1759CG

LTC3405AES6

LTC4555EUD-TRPBF

LTC6088CDHC-PBF

PCB Datasheet:1PCB Datasheet:1PCB Datasheet:1PCB Datasheet:1
LMR70503
SIMPLE SWITCHER® Buck-Boost Converter For Negative Output
Voltage in µSMD
Features
Tiny 8-Bump Thin Micro SMD Package: 0.84 mm × 1.615
mm × 0.6 mm
2.8 V to 5.5 V Input Voltage Range
Adjustable Output Voltage: -0.9 V to -5.5 V
320 mA Switch Current Limit
500 kHz Minimum Switching Frequency
Ground Referred Enable Input
Under Voltage Lock Out (UVLO)
No External Compensation
Internal Soft Start
1 µA Shutdown Supply Current
Small Output Voltage Ripple
WEBENCH® Enabled
Performance Benefits
Easy To Use
Tiny Overall Solution Size Reduces System Cost
Applications
General Purpose Negative Voltage Supply
Negative Rail / Bias Supply For Op-amp And Data
Converters
LCD Biasing
System Performance
Efficiency, V
OUT
= -5.0 V
80
70
EFFICIENCY (%)
60
50
40
30
0 10 20 30 40 50 60 70 80 90 100
LOAD (mA)
30184975
Efficiency, V
OUT
= -2.5 V
80
70
EFFICIENCY (%)
60
50
40
30
0
30
60
90
120
LOAD (mA)
150
180
VIN = 2.8V
VIN = 3.3V
VIN = 4.0V
VIN = 5.0V
VIN = 5.5V
VIN = 2.8V
VIN = 3.3V
VIN = 4.0V
VIN = 5.0V
VIN = 5.5V
30184979
Typical Application Circuit
30184901
PRODUCTION DATA information is current as of
publication date. Products conform to specifications per
the terms of the Texas Instruments standard warranty.
Production processing does not necessarily include
testing of all parameters.
301849 SNVS850
Copyright © 1999-2012, Texas Instruments Incorporated