Datasheet
TPS43060
TPS43061
www.ti.com
SLVSBP4C –DECEMBER 2012–REVISED SEPTEMBER 2013
ELECTRICAL CHARACTERISTICS
V
IN
= 4.5 to 38 V, T
J
= -40ºC to +150ºC, unless otherwise noted. Typical values are at T
A
= 25ºC
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
SUPPLY AND ENABLE
V
IN
Input voltage range 4.5 38 V
Input undervoltage threshold V
IN
falling 3.7 3.9 4 V
V
UV
V
IN
rising 3.9 4.1 4.3 V
V
hys
Undervoltage lockout hysteresis 200 mV
Device non-switching,
I
Q
Operating quiescent current into V
IN
600 800 µA
R
T
= 115 kΩ, V
FB
= 2 V
I
SD
Shutdown current V
EN
= 0.4V 1.5 5 µA
EN pin voltage threshold to standby V
EN
ramping down 0.4 0.7 0.9 V
V
EN
EN pin voltage threshold to enable the device V
EN
ramping up 1.12 1.21 1.29 V
EN pin voltage threshold to disable the device V
EN
ramping down 1 1.14 1.28 V
EN pin pull-up current V
EN
= 1 V 1.8 µA
I
EN
EN pin hysteresis current V
EN
= 1. 3V 3.2 4.6 µA
t
EN
EN to start switching time C
VCC
= 0.47 µF 125 µs
V
IN
= 12 - 38 V,
7.5 V
I
VCC
= 0 µA
TPS43060
V
IN
= 4.5 V,
4.5 V
I
VCC
= 0 µA
V
CC
V
CC
voltage
V
IN
= 12 - 38 V,
5.5 V
I
VCC
= 0 µA
TPS43061
V
IN
= 4.5 V,
4.5 V
I
VCC
= 0 µA
I
VCC
V
CC
pin maximum output current 50 mA
VOLTAGE REFERENCE AND ERROR AMPLIFIER
T
J
= 25°C 1.21 1.22 1.23 V
V
REF
Feedback Voltage Reference
T
J
= -40°C to 150°C 1.195 1.22 1.244
I
FB
Error Amplifier input bias current 20 nA
COMP pin sink current V
FB
= V
REF
+ 250 mV, V
COMP
= 1.5 V 160 µA
I
COMP
COMP pin source current V
FB
= V
REF
- 250 mV, V
COMP
= 1.5 V 160 µA
High clamp, V
FB
= 1V 2.1 V
COMP pin clamp voltage
V
CLAMP
Low clamp, V
FB
= 1.5 V 0.7
COMP pin threshold Duty cycle = 0% 1 V
G
ea
Error amplifier transconductance 1.1 m-mho
R
ea
Error amplifier output resistance 10 MΩ
F
ea
Error amplifier crossover frequency 2 MHz
CURRENT SENSE
Maximum current sense threshold At 0% Duty Cycle 64 73 82 mV
V
CSmax
Maximum current sense threshold At Max Duty Cycle 50 61 72 mV
V
RCsns
Reverse current sense threshold 3.8 mV
I
SNS+
Sense+ pin current 70 µA
I
SNS-
Sense- pin current 70 µA
RT/CLK
Operating frequency range using
50 1000 kHz
resistor timing mode
f
SW
Switching frequency
R
T
= 115 kΩ 450 500 550 kHz
R
T
= 75 kΩ 675 750 825 kHz
V
RT/CLK
RT/CLK pin voltage 0.5 V
t
CLK-min
Minimum input clock pulse width P
LL
= 500 kHz 14 60 ns
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