Datasheet

TPS2590
www.ti.com SLUS960F –JULY 2009–REVISED MAY 2013
ELECTRICAL CHARACTERISTICS
Over operating free-air temperature range, V
IN
= 3 V – 20 V, EN = 0 V, FLT = open, RTRY = open, CT = open, R
RLIM
= 40.2
kΩ, R
RFLT
= 49.9 kΩ, No external capacitor connected to OUT (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
IN
UVLO V
IN
↑ 2.6 2.85 2.9 V
Hysteresis 150 mV
Bias current EN = 2.4 V 25 100 μA
EN = 0 V 3.9 5 mA
OUT
RON R
IN-OUT
, I
OUT
< I
LIM
, 1 A ≤ I
OUT
≤ 4.5 A 29.5 42.0 mΩ
I
OUT
V
IN
: 12 V, C
LOAD
= 1000 μF, EN: 3 V → 0 V 3 5 7.5 W
Reverse diode voltage V
OUT
> V
IN
, EN = 5 V, I
IN
= - 1 A 0.77 1.0 V
IFLT
I
OUT
↑, I
CT
: sinking → sourcing, pulsed test (R
RFLT
= 200 kΩ) 0.8 1 1.2
I
FAULT
Fault current threshold I
OUT
↑, I
CT
: sinking → sourcing, pulsed test (R
RFLT
= 100 kΩ) 1.8 2 2.2 A
I
OUT
↑, I
CT
: sinking → sourcing, pulsed test (R
RFLT
= 49.9 kΩ) 3.6 4 4.4
ILIM
R
RLIM
= 100 kΩ 1.6 2 2.4
Current limit program
I
LIM
R
RLIM
= 66.5 kΩ 2.6 3 3.4 A
I
VOUT
, V
VIN
-V
OUT
= 0.3 V,
pulsed test
R
RLIM
= 40.2 kΩ 4.6 5 5.4
CT
I
CT
sourcing, V
CT
= 1 V 29 35 41
Charge/discharge current μA
I
CT
sinking, V
CT
= 1 V, RTRY = 0 V 1.0 1.4 1.8
V
CT
↑ 1.3 1.4 1.5
Threshold voltage V
V
CT
↓ 0.1 0.16 0.3
ON/OFF fault duty cycle V
VOUT
= 0 V 2.8 3.7 4.6 %
EN
V
EN
↓ 0.8 1.0 1.5 V
Threshold voltage
Hysteresis 50 150 250 mV
V
EN
= 2.4 V (sinking) -1.5 0 0.5
Input bias current μA
V
EN
= 0.2 V (sourcing) 2 1 0.5
Turn on propagation delay V
IN
= 3.3 V, I
LOAD
= 1 A, V
EN
: 2.4 V→ 0.2 V, V
OUT
: ↑ 90% × VI
N
350 500
μs
Turn off propagation delay V
IN
= 3.3 V, I
LOAD
= 1 A, V
EN
: 0.2 V→ 2.4 V, V
OUT
: ↓10% × V
IN
10 20
FLT
VOUT LOW V
CT
= 1.8 V, I
FLT
= 1 mA 0.2 0.4 V
Leakage current V
FLT
= 18 V 1 μA
RTRY
Low threshold voltage Auto Retry Mode 0.8
V
High threshold Latch mode 2.0
V
RTRY
= 3.0 V -1.0 0.2 1.0
Input bias current mA
V
RTRY
= 0.2 V 50 25 0
THERMAL SHUTDOWN
Thermal shutdown T
J
160
°C
Hysteresis 10
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