LP3996_14 Datasheet, PDF (1/26 Pages) Texas Instruments – Dual Linear Regulator with 300mA and 150mA Outputs and Power-On-Reset

LP3996
www.ti.com
SNVS360B – NOVEMBER 2006 – REVISED JANUARY 2008
LP3996 Dual Linear Regulator with 300mA and 150mA Outputs and Power-On-Reset
Check for Samples: LP3996
FEATURES
1
•2 2 LDO Outputs with Independent Enable
• 1.5% Accuracy at Room Temperature, 3% over
Temperature
• Power-On-Reset Function with Adjustable
Delay
• Thermal Shutdown Protection
• Stable with Ceramic Capacitors
APPLICATIONS
• Cellular Handsets
• PDAs
• Wireless Network Adaptors
DESCRIPTION
The LP3996 is a dual low dropout regulator with power-on-reset circuit. The first regulator can source 150mA,
while the second is capable of sourcing 300mA and has a power-on-reset function included.
The LP3996 provides 1.5% accuracy requiring an ultra low quiescent current of 35µA. Separate enable pins
allow each output of the LP3996 to be shut down, drawing virtually zero current.
The LP3996 is designed to be stable with small footprint ceramic capacitors down to 1µF. An external capacitor
may be used to set the POR delay time as required.
The LP3996 is available in fixed output voltages and comes in a 10 pin, 3mm x 3mm package. .
Input Voltage Range
Low Dropout Voltage
Ultra-Low I_Q (enabled)
Virtually Zero I_Q (disabled)
Table 1. Key Specifications
VALUE
2.0V to 6.0
210mV at
300mA
35
<10
UNIT
V
µA
nA
Package available in Lead Free option.
10 pin 3mm x 3mm
Typical Application Circuit
V_IN
EN1
EN2
470 k:
LP3996
V_IN
V_OUT1
EN1
V_OUT2
EN2
POR
C_BYP
1 PF 10 nF
GND
SET
Sets delay
for POR
V_OUT1
V_OUT2
POR
1 PF 1 PF
1
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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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2
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.
Copyright © 2006–2008, Texas Instruments Incorporated