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TPS51120 Datasheet(PDF) 4 Page - Texas Instruments

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Part No. TPS51120
Description  DUAL CURRENT MODE, SYNCHRONOUS STEP-DOWN CONTROLLER WITH 100-mA STANDBY REGULATORS FOR NOTEBOOK SYSTEM POWER
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TPS51120 Datasheet(HTML) 4 Page - Texas Instruments

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ELECTRICAL CHARACTERISTICS
TPS51120
SLUS670A–JULY 2005–REVISED AUGUST 2005
over operating free-air temperature range, VVIN =12V,VVREG5 =VV5FILT = 5 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNIT
SUPPLY CURRENT
VIN current, VREG5=VREG3=No
Load, EN3=EN5=FLOAT,
IINCCAP
Supply current
Current mode
750
1500
EN1=EN2=5V, CS=5V, COMP
connected to Cap
VIN current, VREG5=VREG3=No
IINNOCAP
Supply current
Load, EN3=EN5=FLOAT;
D-CAP mode
700
1400
EN1=EN2=5V, CS=5V, COMP=5V
VIN current, VREG5=No Load
µA
IIN5(STBY)
Stand-by current
EN3=0V, EN5=FLOAT,
5-V only
30
45
EN1=EN2=0
VIN current, VREG3=No Load
IIN3(STBY)
Stand-by current
EN3=FLOAT, EN5=0,
3.3-V only
12
20
EN1=EN2=0
VIN current, VREG5=VREG3=VREF2=No Load
IIN532(STBY) Stand-by current
100
150
EN3=EN5=FLOAT, EN1=EN2=0
IIN(SHDN)
Shut down current
VIN current, EN3=EN5=EN1=EN2=0V
10
20
VOUT and VREF2 VOLTAGES
VFB2=5V, TA=25°C, No Load
3.255
3.300
3.345
VFB2=5V, TA=0to 85°C, No Load
3.241
3.300
3.359
VFB2=5V, TA= -40 to 85°C, No Load
3.234
3.300
3.366
VOUT
Output voltage
VFB1=5V, TA=25°C, No Load
4.935
5.000
5.065
V
VFB1=5V, TA=0to 85°C, No Load
4.910
5.000
5.090
VFB1=5V, TA= -40 to 85°C, No Load
4.900
5.000
5.100
Adjustable mode output range
1.0
5.5
VADJ
Output regulation voltage
Adjustable mode
1.00
V
Adjustable mode, TA=25°C
-0.9%
0.9%
Output regulation voltage toler-
VADJ T
Adjustable mode, TA=0to 85°C
-1.3%
1.3%
ance
Adjustable mode, TA= -40 to 85°C
-1.6%
1.6%
VVREF2
2-V output regulation voltage
IVREF2± 50 µA, TA=25°C
1.97
2.00
2.03
IVREF2± 50 µA, TA=0to 85°C
1.96
2.04
V
2-V output regulation voltage toler-
VVREF2T
ance
IVREF2± 50 µA, TA=-40 to 85°C
1.95
2.05
VFBx=1.02V, COMPx=open
0.02
IVFB
VFB input current
µA
VFBx=1.02V, COMPx=5V
0.02
RDISCHARG Discharge switch resistance
VOx=0.5V, TA=25°C10
20
4


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