參數(shù)資料
型號(hào): MC33025P
廠商: MOTOROLA INC
元件分類(lèi): 穩(wěn)壓器
英文描述: High Speed Double-Ended PWM Controller
中文描述: 2 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDIP16
封裝: PLASTIC, DIP-16
文件頁(yè)數(shù): 7/20頁(yè)
文件大小: 516K
代理商: MC33025P
MC34025 MC33025
7
MOTOROLA ANALOG IC DEVICE DATA
Vref
VCC
UVLO
Reference
Regulator
4.2 V
Figure 18. Representative Block Diagram
Q
S
R
Q
Q
T
Steering
Flip Flop
Output A
12
1.0 V
0.5 V
16
4
5
6
7
3
2
1
8
CSS
10
9
11
14
13
15
PWM Latch
Soft–Start Latch
Vin
9.0
μ
A
Error
Amp
PWM
Comparator
Vref
UVLO
9.2 V
Oscillator
1.4 V
Current
Limit
Q
S
R
VCC
Clock
RT
CT
Noninverting Input
Inverting Input
Error Amp Output
Ramp
Soft–Start
Ground
Current Limit/
Shutdown
Power Ground
Output B
VC
VCC
+
1.25 V
Shutdown
Figure 19. Current Limit Operating Waveforms
Output B
Output A
PWM
Comparator
Ramp
Clock
CT
Soft–Start
Error Amp Output
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