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| 型号： | MAX1533AETJ+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 25/38页 |
| 文件大小： | 0K |
| 描述： | IC POWER SUPPLY CONTROLER 32TQFN |
| 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 ~ 26 V |
| 电流 - 电源： | 15µA |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-WFQFN 裸露焊盘 |
| 供应商设备封装： | 32-TQFN-EP（5x5） |
| 包装： | 带卷 (TR) |
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High-Efficiency, 5x Output, Main Power-Supply
Controllers for Notebook Computers
Power-Good Output (PGOOD)
PGOOD is the open-drain output of a comparator that
C BYP
continuously monitors both SMPS output voltages for
MAX1533A
LDO5
undervoltage conditions. PGOOD is actively held low in
shutdown ( SHDN or ON3 or ON5 = GND), soft-start,
MAX1537A
BST
(R BST )*
D BST
and soft-shutdown. Once the digital soft-start termi-
nates, PGOOD becomes high impedance as long as
DH
C BST
N H
INPUT (V IN )
both outputs are above 90% of the nominal regulation
voltage set by FB_. PGOOD goes low once either
SMPS output drops 10% below its nominal regulation
point, an output overvoltage fault occurs, or either
LDO5
LX
DL
GND
(C NL )*
N L
L
SMPS controller is shut down. For a logic-level PGOOD
output voltage, connect an external pullup resistor
between PGOOD and V CC . A 100k Ω pullup resistor
works well in most applications.
PGOOD is independent of the fault protection states
OVP and UVP .
Fault Protection
Output Overvoltage Protection (OVP)
(R BST )* OPTIONAL—THE RESISTOR LOWERS EMI BY DECREASING
THE SWITCHING-NODE RISE TIME.
(C NL )* OPTIONAL—THE CAPACITOR REDUCES LX TO DL CAPACITIVE
COUPLING THAT CAN CAUSE SHOOT-THROUGH CURRENTS.
If the output voltage of either SMPS rises above 111%
of its nominal regulation voltage and the OVP protection
is enabled ( OVP = GND), the controller sets the fault
latch, pulls PGOOD low, shuts down both SMPS con-
trollers, and immediately pulls DH_ low and forces DL_
Figure 6. Optional Gate-Driver Circuitry
FAULT
POWER-GOOD
PROTECTION
0.9 x
INT REF_
0.7 x
INT REF_
1.11 x
INT REF_
INTERNAL FB
ENABLE OVP
ENABLE UVP
BLANK
(POWER-UP)
TIMER
POR
FAULT
LATCH
FAULT
POWER-
GOOD
Figure 7. Power-Good and Fault Protection
______________________________________________________________________________________
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1533ETJ | 功能描述:电流和电力监控器、调节器 RoHS:否 制造商:STMicroelectronics 产品:Current Regulators 电源电压-最大:48 V 电源电压-最小:5.5 V 工作温度范围:- 40 C to + 150 C 安装风格:SMD/SMT 封装 / 箱体:HPSO-8 封装:Reel |
| MAX1533ETJ+ | 功能描述:电流和电力监控器、调节器 PS Controllers for for Notebooks RoHS:否 制造商:STMicroelectronics 产品:Current Regulators 电源电压-最大:48 V 电源电压-最小:5.5 V 工作温度范围:- 40 C to + 150 C 安装风格:SMD/SMT 封装 / 箱体:HPSO-8 封装:Reel |
| MAX1533ETJ+T | 功能描述:电流和电力监控器、调节器 PS Controllers for for Notebooks RoHS:否 制造商:STMicroelectronics 产品:Current Regulators 电源电压-最大:48 V 电源电压-最小:5.5 V 工作温度范围:- 40 C to + 150 C 安装风格:SMD/SMT 封装 / 箱体:HPSO-8 封装:Reel |
| MAX1533ETJ-T | 功能描述:电流和电力监控器、调节器 RoHS:否 制造商:STMicroelectronics 产品:Current Regulators 电源电压-最大:48 V 电源电压-最小:5.5 V 工作温度范围:- 40 C to + 150 C 安装风格:SMD/SMT 封装 / 箱体:HPSO-8 封装:Reel |
| MAX1533EVKIT | 功能描述:电流和电力监控器、调节器 Evaluation Kit for the MAX1533 RoHS:否 制造商:STMicroelectronics 产品:Current Regulators 电源电压-最大:48 V 电源电压-最小:5.5 V 工作温度范围:- 40 C to + 150 C 安装风格:SMD/SMT 封装 / 箱体:HPSO-8 封装:Reel |
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