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FDS6690AS Datasheet(PDF) 3 Page - Texas Instruments

Part # FDS6690AS
Description  Dual-Synchronous, Step-Down Controller with Out-of-Audio??Operation and 100-mA LDOs for Notebook System Power
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

FDS6690AS Datasheet(HTML) 3 Page - Texas Instruments

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ELECTRICAL CHARACTERISTICS
TPS51123
www.ti.com ........................................................................................................................................................................................... SLUS890 – DECEMBER 2008
over operating free-air temperature range, VIN = 12 V (unless otherwise noted)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNIT
SUPPLY CURRENT
VIN current, TA = 25°C, no load, VO1 = 0 V,
IVIN1
VIN supply current1
VO2 = 0 V, EN0=open, ENC = 5 V,
0.55
1
mA
TRIP1 = TRIP2 = 2 V, VFB1 = VFB2 = 2.05 V
VIN current, TA = 25°C, no load, VO1 = 5 V,
IVIN2
VIN supply current2
VO2 = 3.3 V, EN0=open, ENC = 5 V,
4
6.5
µA
TRIP1 = TRIP2 = 2 V, VFB1 = VFB2 = 2.05 V
VO1 current, TA = 25°C, no load, VO1 = 5 V,
IVO1
VO1 current
VO2 = 3.3 V, EN0=open, ENC = 5 V,
0.8
1.5
mA
TRIP1 = TRIP2 = 2 V, VFB1 = VFB2 = 2.05 V
VO2 current, TA = 25°C, no load, VO1 = 5 V,
IVO2
VO2 current
VO2 = 3.3 V, EN0=open, ENC = 5 V,
12
100
TRIP1 = TRIP2 = 2 V, VFB1 = VFB2 = 2.05 V
VIN current, TA = 25°C, no load,
µA
IVINSTBY
VIN standby current
95
250
EN0 = 1.2 V, ENC = 0 V
VIN current, TA = 25°C, no load,
IVINSDN
VIN shutdown current
10
25
EN0 = ENC = 0 V
VREF OUTPUT
IVREF = 0 A
1.98
2.00
2.02
VVREF
VREF output voltage
V
–5
µA < I
VREF < 100 µA
1.97
2.00
2.03
VREG5 OUTPUT
VO1 = 0 V, IVREG5 < 100 mA, TA = 25°C
4.8
5
5.2
VO1 = 0 V, IVREG5 < 100 mA,
VVREG5
VREG5 output voltage
4.75
5
5.25
V
6.5 V < VIN < 28 V
VO1 = 0 V, IVREG5 < 50 mA, 5.5 V < VIN < 28 V
4. 75
5
5.25
IVREG5
VREG5 output current
VO1 = 0 V, VREG5 = 4.5 V
100
175
250
mA
Turns on
4.55
4.7
4.85
VTH5VSW
Switch over threshold
V
Hysteresis
0.15
0.25
0.3
R5VSW
5 V SW RON
VO1 = 5 V, IVREG5 = 100 mA
1
3
VREG3 OUTPUT
VO2 = 0 V, IVREG3 < 100 mA, TA= 25°C
3.2
3.33
3.46
VVREG3
VREG3 output voltage
VO2 = 0 V, IVREG3 < 100 mA, 6.5 V < VIN < 28 V
3.13
3.33
3.5
V
VO2 = 0 V, IVREG3 < 50 mA, 5.5 V < VIN < 28 V
3.13
3.33
3.5
IVREG3
VREG3 output current
VO2 = 0 V, VREG3 = 3 V
100
175
250
mA
Turns on
3.05
3.15
3.25
VTH3VSW
Switch over threshold
V
Hysteresis
0.1
0.2
0.25
R3VSW
3 V SW RON
VO2 = 3.3 V, IVREG3 = 100 mA
1.5
4
INTERNAL REFERENCE VOLTAGE
VIREF
Internal reference voltage
IVREF = 0 A, beginning of ON state
1.95
1.98
2.01
FB voltage, IVREF = 0 A, skip mode
1.98
2.01
2.04
V
FB voltage, IVREF = 0 A, OOA mode
(1)
2.00
2.035
2.07
VVFB
VFB regulation voltage
FB voltage, IVREF = 0 A, continuous conduction
2.00
mode(1)
IVFB
VFB input current
VFBx = 2.0 V, TA= 25°C
-20
20
nA
OUTPUT VOLTAGE, VOUT DISCHARGE
IDischg
VOUT discharge current
ENC = 0 V, VOx = 0.5 V
10
60
mA
(1)
Ensured by design. Not production tested.
Copyright © 2008, Texas Instruments Incorporated
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