Datasheet

LM26003
www.ti.com SNVS576D –AUGUST 2008–REVISED MARCH 2013
Electrical Characteristics (continued)
Specifications in standard type are for T
J
= 25°C only, and limits in boldface type apply over the junction temperature (T
J
)
range of -40°C to +125°C. Unless otherwise stated, Vin = 12V. Minimum and Maximum limits are ensured through test,
design, or statistical correlation.
Symbol Parameter Conditions Min Typ Max Unit
(1)
Protection
I
LIMPK
Peak Current Limit 3.15 4.7 6.05 A
V
FB_SC
Short Circuit Frequency Foldback Measured at FB falling 0.87 V
Threshold
F_min_sc Min Frequency in Foldback VFB < 0.3V 45 kHz
V
TH_PGOOD
Power Good Threshold Measured at FB, PGOOD rising 89 92 95 %
PGOOD Hysteresis 2 6 8 %
I
PGOOD_HI
PGOOD Leakage Current PGOOD = 5V 1.25 nA
R
DS_PGOOD
PGOOD On Resistance PGOOD sink current = 500 µA 150 Ω
V
UVLO
Under-voltage Lock-Out Threshold Vin falling , shutdown, VDD = 2.70 2.96 3.30 V
VIN
Vin rising, soft-start, VDD = VIN 3.70 3.99 4.30
TSD Thermal Shutdown Threshold 160 °C
θ
JA
Thermal Resistance Power dissipation = 1W 32 °C/W
0 lfpm air flow
Logic
Vth
EN
Enable Threshold Voltage Enable rising 0.8 1.18 1.4 V
Enable Hysteresis 180 mV
I
EN_Source
EN Source Current EN = 0V 4.85 µA
V
TH_FPWM
FPWM Threshold 0.8 1.24 1.6 V
I
FPWM
FPWM Leakage Current FPWM = 5V 3 nA
EA
gm Error Amp Trans-conductance 400 675 1000 µmho
I
COMP
COMP Source Current VCOMP = 0.9V 57 µA
COMP Sink Current VCOMP = 0.9V 57 µA
V
COMP
COMP Pin Voltage Range 0.575 1.365 V
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