參數(shù)資料
型號(hào)： PCZ34670EG
廠(chǎng)商： FREESCALE SEMICONDUCTOR INC
元件分類(lèi)： 穩(wěn)壓器
英文描述： SWITCHING REGULATOR, 400 kHz SWITCHING FREQ-MAX, PDSO20
封裝： 1.27 PITCH, ROHS COMPLIANT, PLASTIC, MS-013AC, SOIC-20
文件頁(yè)數(shù)： 23/24頁(yè)
文件大?。?/td> 986K
代理商： PCZ34670EG
Analog Integrated Circuit Device Data
8
Freescale Semiconductor
34670
ELECTRICAL CHARACTERISTICS
DYNAMIC ELECTRICAL CHARACTERISTICS
DYNAMIC ELECTRICAL CHARACTERISTICS
Table 4. Dynamic Electrical Characteristics
Characteristics noted under conditions 30 V
≤ VPWR ≤ 60 V, -40°C ≤ TA ≤ 85°C, VIN = 0 V unless otherwise noted. Typical
values noted reflect the approximate parameter means at TA = 25°C under nominal conditions unless otherwise noted.
Characteristic
Symbol
Min
Typ
Max
Unit
NORMAL OPERATION
Turn-On Filter Time
tFILT(ON)
—
200
—
s
Turn-Off Filter Time
tFILT(OFF)
—
200
—
s
PWM COMPARATOR
Slope Compensation Ramp as a Function of Switching Frequency
fPWM = 100 kHz
fPWM = 250 kHz
fPWM = 400 kHz
m100
m250
m400
—
10
25
40
—
mV/
s
Duty Cycle Limit
DMAX
—
48
%
GATE DRIVER
Rise Time (10% - 90%), CLoad = 2.0 nF, VDDREG = 9.0 V
tR
—
50
ns
Fall Time (90% - 10%), CLoad = 2.0 nF, VDDREG = 9.0 V
tF
—
30
ns
CURRENT LIMIT
Blanking Time
tBLANK
40
50
60
ns
PWM OSCILLATOR
Default Clock Frequency (FREQ connected to VIN)
fPWM
175
250
325
kHz
Oscillator Frequency Range
fRANGE
100
—
400
kHz
Oscillator Frequency Adjusting Resistor Range
RFREQ
121
—
499
k
ERROR AMPLIFIER
Gain Bandwidth
GBW
1.0
—
MHz
DC Open Loop Gain
AVOL
—
80
—
dB
RESET OUTPUT
RESET Output Low Voltage (IRESET, SINK = 20 mA)
VRESET,LOW
—
0.8
V
RESET Output Filter Time
tRESET
—
20
—
s
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