SLVSAA6 – APRIL 2010
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ELECTRICAL CHARACTERISTICS (continued)
T
J
= –40°C to 150°C, VIN = 3.5 to 42V (unless otherwise noted)
PARAMETER
TIMING RESISTOR AND EXTERNAL CLOCK (RT/CLK PIN)
Switching Frequency Range using
RT mode
f
SW
Switching frequency
Switching Frequency Range using
CLK mode
Minimum CLK input pulse width
RT/CLK high threshold
RT/CLK low threshold
RT/CLK falling edge to PH rising
edge delay
PLL lock in time
SLOW START AND TRACKING (SS/TR)
Charge current
SS/TR-to-VSENSE matching
SS/TR-to-reference crossover
SS/TR discharge current (overload)
SS/TR discharge voltage
POWER GOOD (PWRGD PIN)
VSENSE falling
V
VSENSE
VSENSE threshold
VSENSE rising
VSENSE rising
VSENSE falling
Hysteresis
Output high leakage
On resistance
Minimum VIN for defined output
VSENSE falling
VSENSE = VREF, V(PWRGD) = 5.5 V, 25°C
I(PWRGD) = 3 mA, VSENSE < 0.79 V
V(PWRGD) < 0.5 V, II(PWRGD) = 100
mA
92%
94%
109%
107%
2%
10
50
0.95
1.5
nA
Ω
V
V
SS/TR
= 0.4 V
V
SS/TR
= 0.4 V
98% nominal
VSENSE = 0 V, V(SS/TR) = 0.4 V
VSENSE = 0 V
2
45
1.15
382
54
mA
mV
V
mA
mV
Measured at 500 kHz with RT resistor in series
Measured at 500 kHz
0.5
R
T
= 200 kΩ
100
450
300
40
1.9
0.7
60
100
2.2
581
2500
720
2200
kHz
kHz
kHz
ns
V
V
ns
ms
TEST CONDITIONS
MIN
TYP
MAX
UNIT
4
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