Datasheet

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UDG−05077
9
10
11
12
32
31
30
29
SKIPSEL
TONSEL
PGOOD1
EN1
EN5
EN3
PGOOD2
EN2
TPS51120RHB
(QFN32)
13
14
15
16
28
27
26
25
VBST1
DRVH1
LL1
DRVL1
VBST2
DRVH2
LL2
DRVL2
17
PGND2
8
VO2
7
COMP2
6
VFB2
5
GND
4
VREF2
3
VFB1
2
COMP1
1
VO1
18
CS2
19
VREG3
20
V5FILT
21
V5REG
22
VIN
23
CS1
24
PGND1
+
VO1
1.8 V/6 A
− VO1_GND
PGND1
C1A
EEFUE0E221R
VBAT
+
VO2
1.5 V/6 A
−VO2_GND
PGND2
VBAT
VBAT
GND
V5FILT
EN_1
P_GOOD1
EN_2
EN_LDO5
EN_LDO3
GND
PowerPad
Q2
IRF7832
Q1
IRF7821
C1B
EEFUE0E221R
Q4
IRF7832
Q3
IRF7821
V5FILT
P_GOOD2
C2A
EEFUE0E221R
C2B
EEFUE0E221R
GND
C12
2.2 nF
C22
1 nF
C23
180 pF
C13
220 pF
L1
2.2 µH
C11
0.1 µF
C21
0.1 µF
L2
1.2 µH
C51
1 µF
C50
10 µF
R50
5.1 Ω
C30
10 µF
R10
12 mΩ
R20
12 mΩ
R11
12 mΩ
R14
33 kΩ
R24
33 kΩ
R21
100 kΩ
C31
1 nF
R25
16.5 kΩ
R15
26.7 kΩ
R14
11 kΩ
R24
15 kΩ
20 µF
20 µF
TYPICAL CHARACTERISTICS
−50
0
0
900
800
500
400
300
100
50 100 150
700
600
200
T
J
− Junction Temperature − °C
I
IN
− VIN Supply Current − µA
I
INCAP
= Current Mode
I
INNOCAP
= D−CAP Mode
V
IN
− VIN Input Voltage − V
5 10 15 20 25
0
900
800
500
400
300
100
700
600
200
I
IN
− VIN Supply Current − µA
I
INCAP
= Current Mode
I
INNOCAP
= D−CAP Mode
TPS51120
SLUS670B – JULY 2005 – REVISED FEBRUARY 2007
Figure 4. Current Mode, External 1.8-V/6-A, +1.5-V/6-A, R
SENSE
Sensing
VIN SUPPLY CURRENT VIN SUPPLY CURRENT
vs vs
JUNCTION TEMPERATURE INPUT VOLTAGE
Figure 5. Figure 6.
23
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