TPS65142
www.ti.com
SLVSAX5 –JULY 2011
RECOMMENDED OPERATING CONDITIONS
MIN
TYP
MAX UNIT
VIN
VS
Input voltage range
2.3
6
16.5
32
V
V
AVDD Boost output voltage range(1)
Positive charge pump output voltage range
Battery voltage range
VGH
VBAT
VO
V
4.5
24
V
WLED boost converter output voltage
Negative charge pump output voltage range
Inductor for the AVDD boost converter(2)
Inductor for the WLED boost converter
Input decoupling capacitor
38
V
VGL
L1
–14
4.7
4.7
1
V
10
10
µH
µH
µF
µF
µF
°C
°C
L2
CIN
CO1
CO2
TA
Output decoupling capacitor of the AVDD boost converter
Output decoupling capacitor of the WLED boost converter
Operating ambient temperature
20
2.2
–40
–40
10
85
TJ
Operating junction temperature
125
(1) Maximum output voltage is limited by the overvoltage protection and not the maximum power switch rating
(2) Refer to application section for further information.
ELECTRICAL CHARACTERISTICS
VIN = 3.3 V, VS = 9V, VGH = 20 V, VBAT = 10.8V, IISET = 15µA, VIFBx = 0.5V, EN = VIN, TA = –40°C to 85°C, typical values are at
TA = 25°C (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNIT
SUPPLY
IQ(IN)
Operating quiescent current into VIN
Operating quiescent current into VGH
Device not switching
0.17
22
0.5
40
mA
IQ(VGH)
VGH = 20 V, VFLK not oscillating
Device not switching. VS = 9 V, EN = high
Device not switching. VS = 9 V, EN = GND
VIN = 1.8 V, VS = GND
VIN = 1.8 V, VGH = 32 V
VIN = 1.8 V, VS = 16.5 V
WLED boost regulator switching, no load
EN = GND
µA
2.8
2.5
20
IQ(SUP)
Operating quiescent current into SUP
mA
ISD(VIN)
ISD(VGH)
ISD(SUP)
IQ(BAT)
ISD(BAT)
IQ(VO)
Shutdown current into VIN
Shutdown current into VGH
Shutdown current into SUP
VBAT pin quiescent current
VBAT pin shutdown current
VO pin quiescent current
33
50
µA
µA
µA
mA
µA
µA
30
3
5
0.2
18
VO = 35 V
75
VIN falling
1.9
3.9
2.1
2.2
4.45
VIN under voltage lockout threshold
V
VIN rising
UVLO
VBAT rising
VBAT under voltage lockout threshold
UVLO voltage of WLED control circuit
V
V
VBAT falling
2.2
2.5
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