Datasheet

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SLUS462E − SEPTEMBER 2000 − REVISED NOVEMBER 2004
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3
ELECTRICAL CHARACTERISTICS
over recommended operating junction temperature supply and input voltages, and V
I
(V
CC
) ≥ V
I
(IN) ( unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V
CC
current V
CC
> V
CC
_UVLO, EN ≤ V
IH(EN)
1 mA
V
CC
current, standby mode EN ≤ V
IL(EN)
1 µA
IN current, standby mode EN ≤ V
IL(EN)
10 µA
Standby current (sum of currents into OUT
and VSENSE pins)
V
CC
< V
CC
_UVLO, V
OUT
= 4.3 V, VSENSE = 4.3V 2 4
µA
Standby current (sum of currents into OUT
and VSENSE pins)
EN <= Vil
EN,
V
OUT
= 4.3 V, VSENSE = 4.3 V 2 4
µ
A
VOLTAGE REGULATION, 0°C ≤ T
J
≤ 125°C
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
Output voltage
VSEL = V
SS
, 0 < I
O
≤ 1.2 A 4.059 4.10 4.141 V
Output voltage
VSEL = V
CC
, 0 < I
O
≤ 1.2 A 4.158 4.20 4.242 V
Load regulation
1 mA ≤ I
O
≤ 1.2 A,
V
CC
=5 V,
V
I(IN)
= 5 V,
T
J
= 25°C
1 mV
Line regulation V
OUT
+V
DO
+V
ilim(MAX)
< V
I(VCC)
< 10 V, T
J
= 25°C 0.01 %/V
Dropout voltage = VI(IN)-Vout
I
O
= 1.0 A, 4.9 V <V
I(Vcc)
< 10 V 0.7 V
Dropout voltage = VI(IN)-Vout
I
O
= 1.2 A, V
OUT
+V
DO
+V
ilimMAX
<V
I(VCC)
< 10 V 0.8 V
CURRENT REGULATION, 0°C ≤ T
J
≤ 125°C
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
Current regulation threshold, V
I(limit)
VSENSE < V
O(VSEL-LOW/HIGH)
0.095 0.1 0.105 V
Delay time
VSENSE pulsed above VVLOWV to I
O
= 10% of
regulated value
(1)
1 ms
Rise time
I
O
increasing from 10% to 90% of regulated value.
R
SNS
≥ 0.2 Ω,
(1)
0.1 1 ms
(1)
Specified by design, not production tested.
CURRENT SENSE RESISTOR, 0°C ≤ T
J
≤ 125°C
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
External current sense resistor range (R
SNS
) 100 mA ≤ Ilim ≤ 1.2 A 0.083 1 Ω
PRECHARGE CURRENT REGULATION, 0°C ≤ T
J
≤ 125°C
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
Precharge current regulation V
SENSE
<V
LOWV,
0.083 ≤ R
SNS
≤ 1.0 Ω 40 60 80 mA
V
CC
UVLO COMPARATOR, 0°C ≤ T
J
≤ 125°C
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
Start threshold 4.35 4.43 4.50 V
Stop threshold 4.25 4.33 4.40 V
Hysteresis 50 mV
APG/THERM COMPARATOR, 0°C ≤ T
J
≤ 125°C
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
Upper trip threshold 1.480 1.498 1.515 V
Lower trip threshold 0.545 0.558 0.570 V
Input bias current 1 µA
LOWV COMPARATOR, 0°C ≤ T
J
≤ 125°C
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
Start threshold 2.80 2.90 3.00 V
Stop threshold 3.00 3.10 3.20 V
Hysteresis 100 mV