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参数资料
| 型号： | MAX1856EUB+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 2/18页 |
| 文件大小： | 0K |
| 描述： | IC PWR SPLY PWM SLIC 10-UMAX |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 应用： | 控制器，卫星接收机顶盒，xDSL 和线缆调制解调器 |
| 输入电压： | 3 V ~ 28 V |
| 输出数： | 1 |
| 输出电压： | -24V，-72V |
| 工作温度： | 0°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-TFSOP，10-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 10-uMAX |
| 包装： | 带卷 (TR) |
Wide Input Range, Synchronizable,
PWM SLIC Power Supply
ABSOLUTE MAXIMUM RATINGS
V CC , SYNC/ SHDN to GND .....................................-0.3V to +30V
PGND to GND .......................................................-0.3V to +0.3V
LDO, FREQ, FB, CS to GND.....................................-0.3V to +6V
EXT, REF to GND......................................-0.3V to (V LDO + 0.3V)
LDO Output Current............................................-1mA to +20mA
LDO Short Circuit to GND ...............................................<100ms
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
Junction Temperature ......................................................+150 ° C
Storage Temperature Range .............................-65 ° C to +150 ° C
Lead Temperature (soldering, 10s) .................................+300 ° C
REF Short Circuit to GND ...........................................Continuous
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.
ELECTRICAL CHARACTERISTICS
(V CC = SYNC/ SHDN, V CC = 5V, V LDO = 5V, R OSC = 200k ? , T A = 0 ° C to +85 ° C . Typical values are at T A = +25 ° C, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
PWM CONTROLLER
Operating Input Voltage Range
FB Input Current
Load Regulation
Line Regulation
V CC
I FB
V CC = V LDO
V FB = -0.05V
V CS = 0 to 100mV for 0 to I LOAD(MAX)
Typically 0.0074% per % duty factor on EXT
3
2.7
1
0.013
0.0074
28
5.5
50
V
V
nA
%/mV
%/%
Current-Limit Threshold
CS Input Current
Idle Mode Current-Sense
Threshold
V CC Supply Current (Note 1)
Shutdown Supply Current
V CS
I CS
I CC
CS = GND
V FB = -0.05V, V CC = 3V to 28V
SYNC/ SHDN = GND, V CC = 28V
85
5
100
15
250
3.5
115
1
25
400
6
mV
μA
mV
μA
μA
REFERENCE AND LDO REGULATOR
LDO Output Voltage
V LDO
R LDO = 400 ?
5V ≤ V CC ≤ 28V
3V ≤ V CC ≤ 28V
4.50
2.65
5.00
5.50
5.50
V
Undervoltage Lockout
Threshold
REF to FB Voltage (Note 2)
REF Load Regulation
REF Undervoltage Lockout
Threshold
V UVLO
V REF
V LDO falling edge, 1% hysteresis (typ)
R REF = 10k ? , C REF = 0.22μF
I REF = 0 to 400μA
Rising edge, 1% hysteresis (typ)
2.40
1.225
1.0
2.50
1.250
-2
1.1
2.60
1.275
-10
1.2
V
V
mV
V
OSCILLATOR
R OSC = 100k ? ± 1%
425
500
575
Oscillator Frequency
f OSC
R OSC = 200k ? ± 1%
225
250
275
kHz
R OSC = 500k ? ± 1%
R OSC = 100k ? ± 1%
85
86
100
90
115
94
Maximum Duty Cycle
D
R OSC = 200k ? ± 1%
87
90
93
%
R OSC = 500k ? ± 1%
86
90
94
2
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