LP3996 Datasheet, PDF (1/22 Pages) National Semiconductor (TI) – Dual Linear Regulator with 300mA and 150mA Outputs and Power-On-Reset

LP3996
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SNVS360D – NOVEMBER 2006 – REVISED OCTOBER 2013
LP3996 Dual Linear Regulator with 300 mA and 150 mA 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
KEY SPECIFICATIONS
• Input Voltage Range 2.0V to 6.0V
• Low Dropout Voltage 210 mV at 300 mA
• Ultra-Low I_Q (Enabled) 35 µA
• Virtually Zero I_Q (Disabled) <10 nA
• Package Available in Lead-Free Option
10-pin 3 mm x 3 mm
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
150 mA, while the second is capable of sourcing 300
mA and has a power-on-reset function included.
The LP3996 provides 1.5% accuracy requiring an
ultra low quiescent current of 35 µA. 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 1 µF. 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, 3 mm x 3 mm package.
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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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.
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