Datasheet
TPS61180/1/2
www.ti.com
SLVS801E –DECEMBER 2007–REVISED APRIL 2013
RECOMMENDED OPERATING CONDITIONS
MIN TYP MAX UNIT
V
bat
Battery input voltage range 5.0 24 V
C
in
IC supply voltage range 2.7 3.6 V
V
O
Output voltage range Vin 38 V
L Inductor 4.7 10 μH
C
I
Input capacitor 1 μF
C
O
Output capacitor 2.2 10 μF
F
PWM
PWM dimming frequency 0.1 1 kHz
T
A
Operating ambient temperature –40 85 °C
T
J
Operating junction temperature –40 125 °C
ELECTRICAL CHARACTERISTICS
V
BAT
= 10.8 V, 0.1 μF at Cin, EN = Logic High, IFB current = 15m A, IFB voltage = 500 mV, T
A
= –40°C to 85°C, typical
values are at T
A
= 25°C (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
SUPPLY CURRENT
V
BAT
Battery input voltage range 5.0 24 V
V
cc
IC supply voltage range TPS61180 only 2.7 3.15 3.6 V
V
cin
Cin pin output voltage TPS61181/TPS61182 only 2.7 3.15 3.6 V
Device enable, switching TPS61180 1
I
q_bat
Operating quiescent current into V
BAT
mA
no load, Vin = 24 V
TPS61181/2 3
I
q_Vcc
Operating quiescent current into Cin pin TPS61180 only 2 mA
I
Q_sw
Operating quiescent current into V
O
V
O
= 35V 50 μA
I
SD
Shutdown current EN=GND 2 18 μA
V
cc_UVLO
Cin pin under-voltage lockout threshold TPS61180 only 2.2 2.4 V
V
bat_UVLO
V
BAT
under-voltage lockout threshold When Vin ramp down 4.2 4.5 V
V
bat_hys
V
BAT
under-voltage lockout hysteresis When Vin ramp up 300 mV
EN AND DCTRL
V
H
Logic high voltage 1.2 V
V
L
Logic low voltage 0.4 V
R
PD
Pull down resistor on both pins 400 800 1600 kΩ
TPS61180/1 27 37
T
SD
EN pulse width to shutdown EN high to low ms
TPS61182 21 28
CURRENT REGULATION
V
ISET
ISET pin voltage 1.204 1.229 1.253 V
K
ISET
Current multiple Iout/ISET ISET current = 15 μA and 25 μA 970 1000 1030
IFB Current accuracy Riset = 62K 19.4 20 20.6 mA
K
m
(I
max
–I
min
)/I
AVG
ISET current = 15 μA and 25 μA 1 2.5 %
I
leak
IFB pin leakage current IFB voltage = 20 V on all pins 3 μA
I
IFB_MAX
Current sink max output current IFB = 425 mV 25 mA
BOOST OUTPUT REGULATION
V
IFB_L
V
O
dial up threshold Measured on V
IFB
(min) 400 mV
V
IFB_H
V
O
dial down threshold Measured on V
IFB
(min) 700 mV
V
reg_L
Min Vout regulation voltage 16 V
V
o_step
V
O
stepping voltage 100 150 mV
POWER SWITCH
R
PWM_SW
PWM FET on-resistance V
CC
= 3.3 V for TPS61180 0.2 0.45 Ω
R
start
Start up charging resistance V
O
= 0 V 100 300 Ω
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