
M
4.5V to 40V Input Automotive
Flyback/Boost/SEPIC Power-Supply Controllers
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
IN to SGND.............................................................-0.3V to +45V
IN to PGND.............................................................-0.3V to +45V
ON/
OFF
to SGND ........................................-0.3V to (V
IN
+ 0.3V)
OVI, SLOPE, RTCT, SYNC, SS, FB, COMP,
CS to SGND.........................................-0.3V to (V
REG5
+ 0.3V)
V
CC
to PGND..........................................................-0.3V to +12V
REG5 to SGND.........................................................-0.3V to +6V
OUT to PGND.............................................-0.3V to (V
CC
+ 0.3V)
SGND to PGND.....................................................-0.3V to +0.3V
V
CC
Sink Current (clamped mode).....................................35mA
ELECTRICAL CHARACTERISTICS
(V
IN
= 14V, C
IN
= 0.1μF, C
VCC
= 0.1μF // 1μF, C
REG5
= 1μF, V
ON/
OFF
= 5V, C
SS
= 0.01μF, C
SLOPE
= 100pF, RT = 13.7k
, CT =
560pF, SYNC = OVI = FB = CS = 0V, COMP = unconnected, OUT = unconnected. T
A
= T
J
= -40°C to +125°C, unless otherwise
noted. Typical values are at T
A
= +25°C. All voltages are referenced to PGND, unless otherwise noted.) (Note 1) (Figure 5)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
OUT Current (< 10μs transient)..........................................±1.5A
Continuous Power Dissipation* (T
A
= +70°C)
16-Pin TSSOP-EP (derate 21.3mW/°C
above +70°C)..............................................................1702mW
16-Pin TSSOP (derate 9.4mW/°C above +70°C) ..........754mW
Operating Junction Temperature Range...........-40°C to +125°C
Junction Temperature......................................................+150°C
Storage Temperature Range.............................-60°C to +150°C
Lead Temperature (soldering, 10s).................................+300°C
*As per JEDEC51 Standard, Multilayer Board.
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
POWER SUPPLY
Input Supply Range
Operating Supply Current
ON/
OFF
CONTROL
Input-Voltage Threshold
Input-Voltage Hysteresis
Input Bias Current
Shutdown Current
INTERNAL 7.4V LDO (V
CC
)
Output (V
CC
) Voltage Set Point
Line Regulation
UVLO Threshold Voltage
UVLO Hysteresis
Dropout Voltage
Output Current Limit
Internal Clamp Voltage
INTERNAL 5V LDO (REG5)
V
IN
I
Q
4.5
40.0
3.1
V
V
IN
= 40V, f
OSC
= 150kHz
2
mA
V
ON
V
ON/
OFF
rising
1.05
1.23
75
1.40
V
V
HYST-ON
I
B-ON/
OFF
I
SHDN
mV
μA
μA
V
ON/
OFF
= 40V
V
ON/
OFF
= 0V
0.5
20
10
V
VCC
I
VCC
= 0 to 20mA (sourcing)
V
IN
= 8V to 40V
V
CC
rising
7.15
7.4
1
3.5
500
0.25
45
10.4
7.60
V
mV/V
V
mV
V
mA
V
V
UVLO-VCC
V
HYST-UVLO
3.15
3.75
V
IN
= 4.5V, I
VCC
= 20mA (sourcing)
I
VCC
sourcing
I
VCC
= 30mA (sinking)
0.5
I
VCC-ILIM
V
VCC-CLAMP
10.0
10.8
Output (REG5) Voltage Set Point
V
REG5
V
CC
= 7.5V, I
REG5
= 0 to 15mA (sourcing)
4.75
4.95
5.05
V
Line Regulation
Dropout Voltage
Output Current Limit
V
CC
= 5.5V to 10V
V
CC
= 4.5V, I
REG5
= 15mA (sourcing)
I
REG5
sourcing
2
mV/V
V
mA
0.25
32
0.5
I
REG5-ILIM