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SG2524BN 参数 Datasheet PDF下载

SG2524BN图片预览
型号: SG2524BN
PDF下载: 下载PDF文件 查看货源
内容描述: 调整脉冲宽度调制器 [REGULATING PULSE WIDTH MODULATOR]
分类和应用: 稳压器开关式稳压器或控制器电源电路开关式控制器脉冲光电二极管
文件页数/大小: 5 页 / 67 K
品牌: MICROSEMI [ MICROSEMI CORPORATION ]
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SG1524B/SG2524B/SG3524B
REGULATING PULSE WIDTH MODULATOR
DESCRIPTION
The SG1524B is a pulse width modulator for switching power supplies
which features improved performance over industry standards like the
SG1524. A direct pin-for-pin replacement for the earlier device, it
combines advanced processing techniques and circuit design to provide
improved reference accuracy, and extended common mode range at the
error amplifier and current limit inputs. A DC-coupled flip-flop eliminates
triggering and glitch problems, and a PWM data latch prevents edge
oscillations. The circuit incorporates true digital shutdown for high speed
response, while an undervoltage lockout circuit prevents spurious outputs
when the supply voltage is too low for stable operation. Full double-pulse
suppression logic insures alternating output pulses when the Shutdown
pin is used for pulse-by-pulse current limiting. The SG1524B is specified
for operation over the full military ambient temperature range of -55°C to
125°C. The SG2524B is characterized for the industrial range of -25°C to
85°C, and the SG3524B is designed for the commercial range of 0°C
to 70°C.
FEATURES
7V to 40V operation
5V reference trimmed to
±
1%
100Hz to 400KHz oscillator range
Excellent external sync capability
Dual 100mA output transistors
Wide current limit common mode range
DC-coupled toggle flip-flop
PWM data latch
Undervoltage lockout
Full double-pulse suppression logic
60V output collectors
HIGH RELIABILITY FEATURES
- SG1524B
Available to MIL-STD-883 and DESC SMD
Scheduled for MIL-M-38510 QPL listing
Radiation data available
LMI level "S" processing available
DESCRIPTION
V
REF
+V
IN
GROUND
Reference
Regulator
Undervoltage
Lockout
OSC
To Internal
Circuitry
R
T
C
T
Oscillator
COLLECTOR A
S
T
R
INVERTING
Error
NON-INVERTING
+V
IN
+C.L. SENSE
C.L.
-C.L. SENSE
P.W.M.
D
Q
PWM
LATCH
S
Q
Q
Q
Q
TOGGLE
F/F
EMITTER A
COLLECTOR B
MEMORY
F/F
EMITTER B
COMPENSATION
SHUTDOWN
2/00 Rev 1.3 2/00
Copyright
2000
1
11861 Western Avenue
Garden Grove, CA 92841
(714) 898-8121
FAX: (714) 893-2570
L
INFINITY
Microelectronics Inc.