Datasheet
TPS24720
www.ti.com
SLVSAL1C –MARCH 2011–REVISED SEPTEMBER 2013
RECOMMENDED OPERATING CONDITIONS
over operating free-air temperature range (unless otherwise noted)
MIN NOM MAX UNIT
ENSD, OV 0 16
Input voltage range SENSE, SET
(1)
, VCC 2.5 18 V
EN, FFLTb, FLTb, PGb, OUT 0 18
Sink current FFLTb, FLTb, PGb 0 2 mA
Source current IMON 0 1 mA
Resistance PROG 4.99 500 kΩ
TIMER 1 nF
External capacitance
GATE
(2)
1 µF
Operating junction temperature range, T
J
–40 125 °C
(1) Do not apply voltage directly to these pins.
(2) External capacitance tied to GATE should be in series with a resistor no less than 1 kΩ.
ELECTRICAL CHARACTERISTICS
–40°C ≤ T
J
≤ 125°C, V
CC
= 12 V, V
EN
= 3 V, V
ENSD
= 3 V, R
SET
= 190 Ω, R
IMON
= 5 kΩ, and R
PROG
= 50 kΩ to GND.
All voltages referenced to GND, unless otherwise noted.
PARAMETER CONDITIONS MIN NOM MAX UNIT
VCC
UVLO threshold, rising 2.2 2.32 2.45 V
UVLO threshold, falling 2.1 2.22 2.35 V
UVLO hysteresis
(1)
0.1 V
Enabled ― I
OUT
+ I
VCC
+ I
SENSE
1 1.4 mA
Supply current Disabled
(1)
― EN = 0 V, I
OUT
+ I
VCC
+ I
SENSE
0.45 mA
Shutdown ― ENSD = 0 V, I
OUT
+ I
VCC
+ I
SENSE
1.7 10 µA
EN
Threshold voltage, falling 1.2 1.3 1.4 V
Hysteresis
(1)
50 mV
Input leakage current 0 V ≤ V
EN
≤ 30 V –1 0 1 µA
Turnoff time EN ↓ to V
GATE
< 1 V, C
GATE
= 33 nF 20 60 150 µs
Deglitch time EN ↑ 8 14 18 µs
Disable delay EN ↓ to GATE ↓, C
GATE
= 0, t
pff50–90
, See Figure 1 0.1 0.4 1 µs
ENSD
Threshold voltage Rising or falling edge 0.3 0.7 1.4 V
Pullup current V
ENSD
= 5 V 0.5 1.2 2 µA
Disable delay ENSD to GATE, t
pff50–90
, See Figure 2 0.75 1 µs
OV
Threshold voltage, rising 1.25 1.35 1.45 V
Hysteresis
(1)
60 mV
Input leakage current 0 V ≤ V
OV
≤ 30 V –1 0 1 µA
Deglitch time OV rising 0.5 1.2 1.5 µs
FLTb
Output low voltage Sinking 2 mA 0.11 0.25 V
Input leakage current V
FLTb
= 0 V, 30 V –1 0 1 µA
PGb
Threshold V
(SENSE – OUT)
rising, PGb going high 140 240 340 mV
Hysteresis
(1)
Measured V
(SENSE – OUT)
falling, PGb going low 70 mV
(1) Parameters are provided for reference only, and do not constitute part of TI’s published specifications for purposes of TI product
warranty.
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