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参数资料
| 型号： | MAX8734AEEI+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 5/33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
OUT3, OUT5 Discharge-Mode
On-Resistance
CONDITIONS
MIN
TYP
12
MAX
40
UNITS
?
OUT3, OUT5 Discharge-Mode
Synchronous Rectifier
0.2
0.3
0.4
V
Turn-On Level
ELECTRICAL CHARACTERISTICS
(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 = -40°C to +85°C , unless otherwise noted.) (Note 1)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
MAIN SMPS CONTROLLERS
V+ Input Voltage Range
3.3V Output Voltage in
Fixed Mode
LDO5 in regulation
V+ = LDO5, V OUT5 < 4.41V
V+ = 6V to 24V, FB3 = GND, V SKIP = 5V
6
4.5
3.27
24
5.5
3.39
V
V
V+ = 6V to 24V, FB5 = GND, V SKIP = 5V,
5V Output Voltage in Fixed Mode
MAX8732A/MAX8734A (TON = V CC )
4.95
5.15
V
V+ = 7V to 24V, FB5 = GND, V SKIP = 5V,
MAX8733A/MAX8734A (TON = GND)
Output Voltage in
Adjustable Mode
Output Voltage Adjust Range
FB3, FB5 Adjustable-Mode
Threshold Voltage
Current-Limit Threshold
(Positive, Default)
V+ = 6V to 24V, either SMPS
Either SMPS
Dual-Mode comparator
ILIM_ = V CC , GND - CS_ (MAX8732A/MAX8733A),
GND - LX_ (MAX8734A)
1.97
2.0
0.1
90
2.03
5.5
0.2
110
V
V
V
mV
Current-Limit Threshold
(Positive, Adjustable)
On-Time Pulse Width
Minimum Off-Time
GND - CS_
(MAX8732A/MAX8733A),
GND - LX_ (MAX8734A)
MAX8732A or MAX8734A
(V TON = 5V)
MAX8733A or MAX8734A
(V TON = 0)
V ILIM_ = 0.5V
V ILIM_ = 1V
V ILIM_ = 2V
V OUT5 = 5.05V
V OUT3 = 3.33V
V OUT5 = 5.05V
V OUT3 = 3.33V
40
90
180
1.895
0.833
0.895
0.475
200
60
110
220
2.315
1.017
1.209
0.635
400
mV
μs
ns
INTERNAL REGULATOR AND REFERENCE
LDO5 Output Voltage
LDO5 Undervoltage-Lockout
Fault Threshold
ON3 = ON5 = GND, 6V < V+ < 24V, 0 < I LDO5 < 100mA
Falling edge of LDO5, hysteresis = 1%
4.90
3.7
5.10
4.3
V
V
_______________________________________________________________________________________
5
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