Datasheet


SLVS426 − MAY 2002
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3
RECOMMENDED OPERATING CONDITIONS
MIN NOM MAX UNIT
VIN 4.5 28
Supply voltage
LDO_IN 1.1 3.6
V
Supply voltage
REG5V_IN 4.5 5.5
V
OUT1/2/3_u, LH1/2/3 −0.1 33
VIN_SENSE1/2/3 4.5 28
STBY_LDO, LL1/2/3, TRIP, STBY_VREF3.3/5 −0.1 28
Input voltage, V
I
LDO_GATE −0.1 8
V
Input voltage, V
I
INV1/2/3, INV_LDO, CT, PWM_SEL, FLT, PG_DELAY, SS_STBY1/2/3 −0.1 6
V
PGOUT, FB1/2/3, OUT1/2/3_d −0.1 5.5
LDO_CUR, LDO_OUT −0.1 3.5
Oscillator frequency, f
osc
300 500 kHz
Operating free-air temperature, T
A
−40 85 °C
ELECTRICAL CHARACTERISTICS
over operating free-air temperature range, V
(VIN)
= V
(VIN_SENSE12)
= V
(VIN_SENSE3)
= 12 V (unless otherwise noted)
Supply Current
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
I
CC
Supply current
T
A
= 25°C, V
(LDO_IN)
= 3.6 V,
V
(CT)
= V
(INVx)
= V
(INV_LDO)
= 0 V, V
(PWM_SEL)
= 0 V
2 3 mA
I
CC(STBY)
Standby current
V
(SS_STBYx)
= 0 V, V
(STBY_LDO)
= 0V,
V
(STBY_VREF3.3/5)
= 5 V
150 250 µA
I
CC(S)
Shutdown current
V
(SS_STBYx)
= 0 V, V
(STBY_LDO)
= 0V,
V
(STBY_VREF3.3/5)
= 0 V
0.001 10 µA
Reference Voltage
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V
ref
Reference voltage 0.85 V
T
A
= 25°C, I
ref
= 50 µA −1.5% 1.5%
V
ref
(tol
)
Reference voltage tolerance
T
A
= 0°C to 85°C, I
ref
= 50 µA −2% 2%
V
ref
(tol)
Reference voltage tolerance
T
A
= −40°C to 85°C, I
ref
= 50 µA −2.5% 2.5%
Line regulation V
(VIN)
= 4.5 V to 28 V, I
ref
= 50 µA 0.05 5 mV
Load regulation I
ref
= 0.1 µA to 1 mA 0.15 5 mV
5 V Internal Switch
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V
T(LH)
Threshold voltage
High
REG5V_IN voltage
4.2 4.8
V
V
T(HL)
Threshold voltage
Low
REG5V_IN voltage
4.1 4.7
V
V
hys
Hysteresis REG5V_IN voltage 30 200 mV
VREF5
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V
O
Output voltage
I
O
= 0 mA to 50 mA,
V
(VIN)
= 5.5 V to 28 V, T
A
= 25°C
4.8 5.2 V
Line regulation V
(VIN)
= 5.5 V to 28 V, I
O
= 10 mA 20 mV
Load regulation I
O
= 1 mA to 10 mA, V
(VIN)
= 5.5 V 40 mV
I
OS
Short-circuit output current V
(VREF5)
= 0 V, T
A
= 25°C 65 mA
V
T(LH)
UVLO threshold voltage
High
VREF5 voltage
3.6 4.2
V
V
T(HL)
UVLO threshold voltage
Low
VREF5 voltage
3.5 4.1
V
V
hys
Hysteresis VREF5 voltage 30 200 mV