Datasheet



SLUS571 − SEPTEMBER 2003
3
www.ti.com
ELECTRICAL CHARACTERISTICS
T
J
= −40°C to 85°C, V
CC
= 12 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS MIN TYP MAX UNIT
SUPPLY CURRENTS
I
CC
Supply current T
A
= 25°C, V
CT
= V
INV1
=V
INV2
= 0 V 1.1 1.5 mA
I
CCS
V
IN
standby current V
STBY1
= V
STBY2
= 0 V 0.1 10.0 µA
5-V REGULATOR
V
VREF5
Output voltage
T
A
= 25°C, 7.5 V ≤ V
CC
≤ 15 V,
0 mA ≤ I
O
≤ 10 mA
4.8 5.0 5.2 V
V
LN5
Line regulation 7.5 V ≤ V
CC
≤ 15 V, I
O
=10 mA 20
mV
V
LD5
Load regulation 1 mA ≤ I
O
≤ 10 mA 40
mV
I
OS
Short-circuit output current V
REF5
= 0 V, T
A
= 25°C 65 mA
V
THH
UVLO threshold voltage
high-to-low 3.6 4.2 V
V
THL
UVLO threshold voltage
low-to-high 3.5 4.1 V
V
HYS
Hysteresis 30 150 mV
REFERENCE VOLTAGE
V
REF
Reference voltage 0.85 V
V
REF(tol)
Reference voltage tolerance I
REF
= 50 µA, T
A
= 25°C -0.5% 0.5%
V
REF(ln)
Line regulation 6.5 V ≤ V
CC
≤ 15 V, I
REF
= 50 µA 0.03 3.00
mV
V
REF(ld)
Load regulation 0.1 µA ≤ I
REF
≤ 1 mA 0.15 5.00
mV
CONTROL
V
IH
High-level input voltage STBY1, STBY2 2.2
V
V
IL
Low-level input voltage STBY1, STBY2 0.3
V
OUTPUT VOLTAGE MONITOR
OVP comparator threshold voltage 0.90 0.95 1.00
V
UVP comparator threshold voltage 0.58 0.66 0.74
V
Timer latch current source
Overvoltage protection −4 −8 −12
A
Timer latch current source
Undervoltage protection
−1 −1.7 −2.3
µA
OSCILLATOR
f
OSC
Frequency C
T
= 47 pF, T
A
= 25°C 300 kHz
V
OSC(h)
High-level output voltage
DC 1.0 1.1 1.2
V
OSC(h
)
High-level output voltage
f
OSC
= 300 kHz
1.14
V
V
OSC
(l)
Low-level output voltage
DC 0.4 0.5 0.6
V
V
OSC
(l
)
Low-level output voltage
f
OSC
= 300 kHz
0.46
ERROR AMPLIFIER
V
IO
Input offset voltage T
A
= 25°C 2 10 mV
Open-loop voltage gain 50 dB
Unity gain bandwidth 2.5 MHz
I
SINK
Output sink current V
O
= 2.5 V 2 4
mA
I
SRC
Output source current V
O
= 2.5 V −2 −4
mA
DUTY CONTROL
Maximum duty cycle f
OSC
= 300 kHz, V(
INV1)
= V(
INV2)
= 0 V 80%