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參數(shù)資料
| 型號(hào)： | MC34167 |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | 500kHz and 1MHz High Efficiency 1.5A Switching Regulators; Package: SO; No of Pins: 8; Temperature Range: -40?°C to 85?°C |
| 中文描述： | 射頻放大器 |
| 文件頁數(shù)： | 3/20頁 |
| 文件大?。?/td> | 263K |
| 代理商： | MC34167 |
MC34167, MC33167
http://onsemi.com
3
ELECTRICAL CHARACTERISTICS
(V
CC
= 12 V, for typical values T
A
= +25
°
C, for min/max values T
A
is the operating ambient
temperature range that applies (Notes 4, 5), unless otherwise noted.)
Characteristic
Symbol
Min
Typ
Max
Unit
OSCILLATOR
Frequency (V
CC
= 7.5 V to 40 V)
T
A
= +25
°
C
T
A
= T
low
to T
high
f
OSC
65
62
72
79
81
kHz
ERROR AMPLIFIER
Voltage Feedback Input Threshold
T
A
=+ 25
°
C
T
A
= T
low
to T
high
V
FB(th)
4.95
4.85
5.05
5.15
5.20
V
Line Regulation (V
CC
= 7.5 V to 40 V, T
A
= +25
°
C)
Input Bias Current (V
FB
= V
FB(th)
+ 0.15 V)
Power Supply Rejection Ratio (V
CC
= 10 V to 20 V, f = 120 Hz)
Output Voltage Swing
High State (I
Source
= 75
A, V
FB
= 4.5 V)
Low State (I
Sink
= 0.4 mA,
V
FB
= 5.5 V)
Reg
line
I
IB
PSRR
0.03
0.078
%/V
0.15
1.0
A
60
80
dB
V
OH
V
OL
4.2
4.9
1.6
1.9
V
PWM COMPARATOR
Duty Cycle (V
CC
= 20 V)
Maximum (V
FB
= 0 V)
Minimum (V
Comp
= 1.9 V)
DC
(max)
DC
(min)
92
0
95
0
100
0
%
SWITCH OUTPUT
Output Voltage Source Saturation (V
CC
= 7.5 V, I
Source
= 5.0 A)
OffState Leakage (V
CC
= 40 V, Pin 2 = GND)
Current Limit Threshold (V
CC
= 7.5 V)
Switching Times (V
CC
= 40 V, I
pk
= 5.0 A, L = 225 H, T
A
= +25
°
C)
Output Voltage Rise Time
Output Voltage Fall Time
V
sat
I
sw(off)
I
pk(switch)
(V
CC
1.5)
0
(V
CC
1.8)
100
V
A
5.5
6.5
8.0
A
t
r
t
f
100
50
200
100
ns
UNDERVOLTAGE LOCKOUT
Startup Threshold (V
CC
Increasing, T
A
= +25
°
C)
Hysteresis (V
CC
Decreasing, T
A
= +25
°
C)
V
th(UVLO)
V
H(UVLO)
5.5
5.9
6.3
V
0.6
0.9
1.2
V
TOTAL DEVICE
Power Supply Current (T
A
= +25
°
C )
Standby (V
CC
= 12 V, V
Comp
< 0.15 V)
Operating (V
CC
= 40 V, Pin 1 = GND for maximum duty cycle)
4. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient as possible.
5. T
low
= 0
°
C for MC34167
T
high
= + 70
°
C for MC34167
= 40
°
C for MC33167
= + 85
°
C for MC33167
I
CC
36
40
100
60
A
mA
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