SG1524B/SG2524B/SG3524B
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Input Voltage (+V
IN
) .......................................................... 42V
Collector Voltage ............................................................. 60V
Logic Inputs ..........................................................
-0.3V to 5.5V
Current Limit Sense Inputs .....................................
-0.3V to V
IN
Output Current (each transistor) ................................. 200mA
Reference Load Current ............................................... 50mA
Note 1. Values beyond which damage may occur.
Oscillator Charging Current ..............................................5mA
Operating Junction Temperature
150°C
Hermetic (J, L Packages) ............................................
150°C
Plastic (N, DW Packages) ...........................................
-65°C to 150°C
Storage Temperature Range ............................
Lead Temperature (Soldering, 10 seconds) ...................300°C
THERMAL DATA
J Package:
Thermal Resistance-
Junction to Case
,
θ
JC
.................. 30°C/W
Thermal Resistance-
Junction to Ambient
,
θ
JA
............... 80°C/W
N Package:
Thermal Resistance-
Junction to Case
,
θ
JC
.................. 40°C/W
Thermal Resistance-
Junction to Ambient
,
θ
JA
.............. 65°C/W
DW Package:
Thermal Resistance-
Junction to Case
,
θ
JC
................... 40°C/W
Thermal Resistance-
Junction to Ambient
,
θ
JA
.............. 95°C/W
L Package:
Thermal Resistance-
Junction to Case
,
θ
JC
................... 35°C/W
Thermal Resistance-
Junction to Ambient
,
θ
JA
............ 120°C/W
Note A. Junction Temperature Calculation: T
J
= T
A
+ (P
D
x
θ
JA
).
Note B. The above numbers for
θ
JC
are maximums for the limiting
thermal resistance of the package in a standard mount-
ing configuration. The
θ
JA
numbers are meant to be
guidelines for the thermal performance of the device/pc-
board system. All of the above assume no ambient
airflow.
RECOMMENDED OPERATING CONDITIONS
(Note 2)
Input Voltage (+V
IN
) ................................................ 7V to 40V
Collector Voltage .................................................... 0V to 60V
Error Amp Common Mode Range ....................... 2.3V to V
REF
Current Limit Sense Common Mode Range ...... 0V to V
IN
-2.5V
Output Current (each transistor) .......................... 0 to 100mA
Reference Load Current ........................................ 0 to 20mA
Oscillator Charging Current ............................ 25µA to 1.8mA
Note 2: Range over which the device is functional.
Oscillator Frequency Range ........................ 100Hz to 400KHz
Oscillator Timing Resistor (R
T
) ......................... 2KΩ to 150KΩ
Oscillator Timing Capacitor (C
T
) .......................... 1nF to 0.1µF
Operating Ambient Temperature Range
SG1524B .................................................... -55°C to 125°C
SG2524B ...................................................... -25°C to 85°C
SG3524B ......................................................... 0°C to 70°C
ELECTRICAL CHARACTERISTICS
(Unless otherwise specified, these specifications apply over the operating ambient temperatures for SG1524B with -55°C
≤
T
A
≤
125°C, SG2524B with -
25°C
≤
T
A
≤
85°C, SG3524B with 0°C
≤
T
A
≤
70°C, and +V
IN
= 20V. Low duty cycle pulse testing techniques are used which maintains junction and case
temperatures equal to the ambient temperature.)
Parameter
Reference Section
(Note 3)
Output Voltage
Line Regulation
Load Regulation
Temperature Stability
(Note 7)
Total Output Voltage Range
Short Circuit Current
Undervoltage Lockout Section
Threshold Voltage
Note 3. I
L
= 0mA
Test Conditions
T
J
= 25°C
V
IN
= 7V to 40V
I
L
= 0 to 20mA
Over Operating Temperature Range
Over Line, Load and Temperature
V
REF
= 0V
SG1524B/2524B
SG3524B
Units
Min. Typ. Max. Min. Typ. Max.
4.95 5.00 5.05 4.90 5.00 5.10
3
20
3
30
5
30
5
50
15
50
15
50
4.90
5.10 4.80
5.20
25
50 120 25
50 120
4.3
4.5
4.7
4.2
4.5
4.9
V
mV
mV
mV
V
mA
V
2/00 Rev 1.3 2/00
Copyright
2000
2
11861 Western Avenue
∞
Garden Grove, CA 92841
(714) 898-8121
∞
FAX: (714) 893-2570
L
INFINITY
Microelectronics Inc.
MICROSEMI [ MICROSEMI CORPORATION ]
