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| 型号： | MAX5951ETJ+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 2/25页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM VM 32-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 60 |
| PWM 型： | 电压模式 |
| 输出数： | 1 |
| 频率 - 最大： | 1MHz |
| 占空比： | 88% |
| 电源电压： | 4.5 V ~ 16 V |
| 降压： | 是 |
| 升压： | 无 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 32-WFQFN 裸露焊盘 |
| 包装： | 管件 |
12V/5V Input Buck PWM Controller
ABSOLUTE MAXIMUM RATINGS
IN to AGND.............................................................-0.3V to +24V
BST to AGND..........................................................-0.3V to +30V
BST to LX..................................................................-0.3V to +6V
CS- to AGND ...............................................-0.3V to (V IN + 0.3V)
REG, DREG, PUVLO, DCENI, SYNCIN, THRESH,
SENSE to AGND....................................................-0.3V to +6V
RT, ILIM, STARTUP, PGOOD, FB, CS+ to AGND ....-0.3V to +6V
SYNCOUT, COMP to AGND.....................-0.3V to (V REG + 0.3V)
Continuous Power Dissipation (T A = +70°C)
32-Pin TQFN (derate 34.5 mW/°C above +70°C) .2758.6mW
32-Pin TQFN ( θ JA ) ....................................................+29°C/W
32-Pin TQFN ( θ JC ) ...................................................+2.1°C/W
Operating Ambient Temperature Range .............-40°C to +85°C
Maximum Junction Temperature .....................................+150°C
Storage Temperature Range .............................-60°C to +150°C
Lead Temperature (soldering, 10s) ......…………………..+300°C
DL to PGND...............................................-0.3V to (V DREG + 6V)
DH to LX ....................................................-0.3V to (V BST + 0.3V)
PGND to AGND .....................................................-0.3V to +0.3V
Input Current (any pin) .....................................................±50mA
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 IN = 12V or V IN = V REG = 5V, V DREG = V REG , V PGND = 0V, V SYNCIN = 0V, R RT = 100k ? , R ILIM = 60k ? , C REG = 2.2μF, T A = T J =
-40°C to +85°C, unless otherwise noted. Typical values are at T A = T J = +25°C.) (Note 1)
PARAMETER
Input-Voltage Range
Standby Supply Current
Quiescent Supply Current
Switching Supply Current
SYMBOL
V IN
CONDITIONS
V IN = V REG = V DREG (Note 2)
V IN = 16V, V PUVLO = 0V
V IN = 16V, V FB = 0.9V
V IN = 16V, V FB = 0V
MIN
8
4.5
TYP
0.3
1.6
5.0
MAX
16
5.5
0.5
2.6
8.0
UNITS
V
mA
mA
mA
PWM UVLO
Default PWM Undervoltage
Lockout Threshold
PWM Undervoltage Lockout
Hysteresis
V IN rising
6.7
0.7
7.3
V
V
PUVLO Threshold
V PUVLO
V PUVLO rising
1.202
1.220
1.238
V
PUVLO Hysteresis
122
mV
PUVLO Input Impedance
180
310
500
k ?
PWM DCENI CONTROL
DCENI Comparator Input
Common-Mode Range
0
3
V
DCENI Comparator Offset
DCENI Comparator Hysteresis
DCENI Input Current
THRESH Operating Voltage
Range
THRESH Input Current
V DCENI - V THRESH
V THRESH > 0.6V
V THRESH < 0.3V
-10
-1
0.6
-1.5
-5
100
+10
+1
2.5
+1
+1
mV
mV
μA
V
μA
Default DCENI Threshold
V THRESH < 0.3V
1.202
1.22
1.238
V
2
_______________________________________________________________________________________
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| MAX5951ETJ+ | 功能描述:电压模式 PWM 控制器 12V/5V Buck PWM Controller RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| MAX5951ETJ+T | 功能描述:电压模式 PWM 控制器 12V/5V Buck PWM Controller RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| MAX5951ETJ-T | 功能描述:电压模式 PWM 控制器 RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| MAX5952AEAX+ | 功能描述:热插拔功率分布 Quad PSE Controller for POE RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube |
| MAX5952AEAX+CK8 | 功能描述:热插拔功率分布 Quad PSE Controller for POE RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube |
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