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參數(shù)資料
| 型號： | MAX1692 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Low-Noise, 5.5V-Input, PWM Step-Down Regulator |
| 中文描述： | 低噪聲、5.5V輸入、PWM降壓型穩(wěn)壓器 |
| 文件頁數(shù)： | 2/12頁 |
| 文件大小： | 150K |
| 代理商： | MAX1692 |
M
Low-Noise, 5.5V-Input,
PWM S tep-Down Regulator
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
IN, BP,
SHDN
, SYNC/PWM, LIM to GND ................ -0.3V to +6V
BP to IN .................................................................-0.3V to +0.3V
PGND to GND ...................................................... -0.3V to +0.3V
LX to PGND................................................. -0.3V to (V
IN
+ 0.3V)
FB, REF to GND ......................................... -0.3V to (V
BP
+ 0.3V)
Reference Current............................................................. ±1mA
LX Peak Current (internally limited)...................................... 1.6A
ELECTRICAL CHARACTERISTICS
(V
IN
= +3.6V, SYNC/PWM = GND, V
LIM
= 3.6V,
SHDN
= IN, circuit of Figure 2;
T
A
= 0°C to +85°C
, unless otherwise noted. Typical
values are at T
A
= +25°C.)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
Continuous Power Dissipation (T
A
= +70°C)
10-Pin μMAX (derate 5.6mW/°C above +70°C)............444mW
Operating Temperature Range .......................... -40°C to +85°C
Maximum J unction Temperature .................................... +150°C
Storage Temperature Range............................ -65°C to +160°C
Lead Temperature (soldering, 10sec) .............................+300°C
(Note 1)
FB = OUT, V
IN
= V
LIM
= 5.5V, I
OUT
= 0
(duty cycle = 23%) (Note 2)
Duty cycle = 100% to 23%
I
OUT
= 0 to 600mA, LIM = IN or
I
OUT
= 0 to 250mA, LIM = GND
V
FB
= 1.4V
FB = OUT, V
IN
= V
LIM
= 2.7V to 5.5V,
I
OUT
= 0
FB = OUT, V
IN
= 2.7V to 5.5V,
I
OUT
= 0 to 600mA, LIM = IN or
I
OUT
= 0 to 250mA, LIM = GND
SHDN
= LX = GND, includes LX leakage
current
V
IN
= 5.5V, V
LX
= 0 or 5.5V
SYNC/PWM = GND, V
FB
= 1.4V,
LX unconnected
I
LX
= 180mA
SYNC/PWM = IN, FB = REF
V
FB
= 1.4V
V
IN
= 3.6V
V
IN
= 2.7V
V
IN
= 3.6V
V
IN
LIM = IN
LIM = GND
CONDITIONS
μA
0.1
10
Shutdown Supply Current
μA
85
140
Quiescent Current
mA
80
120
160
Pulse-Skipping Current-Limit
Threshold
0
50
100
mA
-450
-850
-1600
N-Channel Current-Limit
Threshold
0.75
1.2
1.55
A
0.35
0.6
0.85
P-Channel Current-Limit
Threshold
V
V
REF
V
IN
Output Adjustment Range
1.223
1.249
1.275
V
2.7
5.5
V
IN
Input Voltage Range
0.5
0.4
0.8
N
RDS(ON)
N-Channel On-Resistance
0.4
0.3
0.65
P
RDS(ON)
P-Channel On-Resistance
V
1.223
1.249
1.275
V
FB
Feedback Voltage
%
+1
Line Regulation
%
-1.3
Load Regulation
nA
-50
0.01
50
I
FB
FB Input Current
UNITS
MIN
TYP
MAX
SYMBOL
PARAMETER
μA
kHz
kHz
%
%
V
-20
650
500
100
0.1
750
20
830
1000
LX Leakage Current
Oscillator Frequency
SYNC Capture Range
Maximum Duty Cycle
Minimum Duty Cycle
Reference Output Voltage
f
OSC
duty
MAX
duty
MIN
V
REF
22
I
REF
= 0
1.235
1.250
1.265
V
1.190
1.232
1.275
V
OUT
Output Voltage
I
LX
= 180mA
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