SM72485MM NSC [National Semiconductor], SM72485MM Datasheet - Page 3

• Manufacturer Part Number: SM72485MM
• Description: SolarMagic 100V, 150 mA Constant On-Time Buck Switching Regulator
• Manufacturer: NSC [National Semiconductor]

VCC Supply
Vcc Reg
Switch Characteristics
Current Limit
T
T
On Time Generator
OFF-1
OFF-2
V
BST to GND
SW to GND (Steady State)
ESD Rating
BST to V
Absolute Maximum Ratings
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Electrical Characteristics
apply over full Operating Junction Temperature range. V
Symbol
IN
Human Body Model
to GND
CC
Current Limit Threshold
Current Limit Response Time
OFF time generator
OFF time generator
T
T
Remote Shutdown Threshold
Remote Shutdown Hysteresis
(Note
ON
ON
Gate Drive UVLO hysteresis
Pre-charge switch on-time
Pre-charge switch voltage
- 1
- 2
Vcc Bypass Hysteresis
Vcc Output Impedance
Vcc Bypass Threshold
Vcc Regulator Output
Vcc UVLO filter delay
Vcc UVLO hysteresis
Iin Shutdown Current
5)
Iin Operating current
Buckswitch Rds(on)
Gate Drive UVLO
Vcc Current Limit
Parameter
Vcc UVLO
Vin – Vcc
Specifications with standard typeface are for T
-0.3V to 100V
-0.3V to 114V
Vin = 48V
6V < Vin < 8.5V
Vin Increasing
Vin =6V
Vin = 10V
Vin = 48V
Vin = 48V
Vcc Increasing
FB = 3V, Vin = 48V
RT/SD = 0V
Itest = 200 mA
Vbst – Vsw Rising
At 1 mA
I
to Switch Off
FB=0V, R
FB=2.3V, R
Vin = 10V
Ron = 200K
Vin = 95V
Ron = 200K
Rising
switch
(Note
Overdrive = 0.1A Time
1)
Conditions
100V
2kV
CL
-1V
CL
IN
= 100K
= 100K
= 48V, unless otherwise stated
3
BST to SW
V
All Other Inputs to GND
Lead Temperature (Soldering 4 sec)
Storage Temperature Range
V
Operating Junction Temperature
Operating Ratings
CC
IN
to GND
0.24
2.15
0.40
Min
200
6.6
2.8
J
= 25°C, and those with boldface type
2.56
2.77
0.70
Typ
100
300
100
190
550
110
490
150
350
300
8.5
8.8
0.8
9.2
5.3
2.2
3.8
0.8
0.3
35
35
(Note
7
3
3).
(Note
Max
0.36
1.05
750
176
420
7.4
4.6
4.8
3.5
1)
−40°C to + 125°C
-55°C to +150°C
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6V to 95V
-0.3 to 7V
Units
mV
mV
mA
mV
mV
mV
260°C
µA
µA
µs
ns
ns
µs
µs
µs
ns
Ω
Ω
Ω
Ω
V
V
V
V
V
A
V
14V
14V