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| LP3971 Datasheet, PDF (14/57 Pages) National Semiconductor (TI) – POWER MANAGEMENT UNIT FOR ADVANCED APPLICATION PROCESSORS | |||
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LP3971
SNVS432U â JANUARY 2006 â REVISED OCTOBER 2008
VIN = 3, 3.5 volts VOUT = 1.4 volts Forced PWM
90.00
VIN = 5.5V
72.00
VIN = 5V
54.00
36.00
18.00
0.00
1
1e1
1e2
1e3
1e4
OUTPUT CURRENT (mA)
Load Transient
3.6 VIN, 3.3 VOUT, 0 â 100 mA load
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Line Transient Response
VIN = 3, 3.6 V, VOUT = 1.2 V, 250 mA load
4.03 Ps
Mode Change
Load transients 20 mA to 560 mA
VOUT = 1.4 volts [PFM to PWM] VIN = 4.1 volts
4.03 Ps
Startup
Startup into PWM Mode 980 mA [channel 2]
VOUT = 1.4 volts VIN = 4.1 volts
4.0 Ps
4.03 Ps
14
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Copyright © 2006â2008, Texas Instruments Incorporated
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