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参数资料
| 型号： | MAX8734AEEI+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 3/33页 |
| 文件大小： | 0K |
| 描述： | IC PWR SUPPLY CONTROLLER 28QSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 应用： | 电源控制器 |
| 输入电压： | 4.5 V ~ 24 V |
| 电流 - 电源： | 25µA |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-QSOP |
| 供应商设备封装： | 28-QSOP |
| 包装： | 带卷 (TR) |
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High-Efficiency, Quad-Output, Main Power-
Supply Controllers for Notebook Computers
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1 and Figure 2, no load on LDO5, LDO3, OUT3, OUT5, and REF, V+ = 12V, ON3 = ON5 = V CC , V SHDN = 5V,
T A = 0°C to +85°C , unless otherwise noted. Typical values are at T A = +25°C.)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
MAX8732A or MAX8734A
(V TON = 5V), SKIP = V CC
5V SMPS
3.3V SMPS
200
300
Operating Frequency
MAX8733A or MAX8734A
(V TON = 0), SKIP = V CC
SKIP = REF
5V SMPS
3.3V SMPS
25
400
500
36
kHz
MAX8732A or MAX8734A
V OUT5 = 5.05V
1.895
2.105
2.315
On-Time Pulse Width
Minimum Off-Time
(V TON = 5V)
MAX8733A or MAX8734A
(V TON = 0)
V OUT3 = 3.33V
V OUT5 = 5.05V
V OUT3 = 3.33V
0.833
0.895
0.475
250
0.925
1.052
0.555
300
1.017
1.209
0.635
350
μs
ns
MAX8732A or MAX8734A
V OUT5 = 5.05V
94
Maximum Duty Cycle
(V TON = 5V)
MAX8733A or MAX8734A
(V TON = 0)
V OUT3 = 3.33V
V OUT5 = 5.05V
V OUT3 = 3.33V
91
88
85
%
INTERNAL REGULATOR AND REFERENCE
LDO5 Output Voltage
LDO5 Short-Circuit Current
LDO5 Undervoltage-Lockout
Fault Threshold
LDO5 Bootstrap Switch Threshold
LDO5 Bootstrap
Switch Resistance
LDO3 Output Voltage
LDO3 Short-Circuit Current
LDO3 Bootstrap Switch Threshold
LDO3 Bootstrap Switch
Resistance
REF Output Voltage
ON3 = ON5 = GND, 6V < V+ < 24V, 0 < I LDO5 < 100mA
LDO5 = GND
Falling edge of LDO5, hysteresis = 1%
Falling edge of OUT5, rising edge at OUT5 regulation
point
LDO5 to OUT5, V OUT5 = 5V
ON3 = ON5 = GND, 6V < V+ < 24V, 0 < I LDO3 < 100mA
LDO3 = GND
Falling edge of OUT3, rising edge at OUT3 regulation
point
LDO3 to OUT3, V OUT3 = 3.2V
No external load
4.90
3.7
4.43
3.28
2.80
1.980
5.00
190
4.0
4.56
1.4
3.35
180
2.91
1.5
2.000
5.10
4.3
4.69
3.2
3.42
3.02
3.5
2.020
V
mA
V
V
?
V
mA
V
?
V
REF Load Regulation
REF Sink Current
0 < I LOAD < 50μA
REF in regulation
10
10
mV
μA
V+ Operating Supply Current
V+ Standby Supply Current
V+ Shutdown Supply Current
Quiescent Power Consumption
LDO5 switched over to OUT5, 5V SMPS
V+ = 6V to 24V, both SMPSs off, includes I SHDN
V+ = 4.5V to 24V
Both SMPSs on, FB3 = FB5 = SKIP = GND, V OUT3 =
3.5V, V OUT5 = 5.3V
25
150
6
3
50
250
15
4.5
μA
μA
μA
mW
FAULT DETECTION
Overvoltage Trip Threshold
FB3 or FB5 with respect to nominal regulation point
+8
+11
+14
%
_______________________________________________________________________________________
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