- 您现在的位置：买卖IC网 > PDF目录19782 > MAX5936LAESA+T (Maxim Integrated)IC HOT-SWAP CTRLR -48V 8-SOIC PDF资料下载
参数资料
| 型号： | MAX5936LAESA+T |
| 厂商： | Maxim Integrated |
| 文件页数： | 12/23页 |
| 文件大小： | 382K |
| 描述： | IC HOT-SWAP CTRLR -48V 8-SOIC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 热交换控制器 |
| 应用： | 通用 |
| 内部开关： | 无 |
| 电源电压： | -10 V ~ -80 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOIC |
| 包装： | 带卷 (TR) |
-48V Hot-Swap Controllers with V
IN
Step Immunity and No R
SENSE
12 ______________________________________________________________________________________
PGOOD (PGOOD) Open-Drain Output
The power-good outputs, PGOOD (PGOOD), are open
drain and are referenced to V
OUT
. They assert and latch
if V
OUT
ramps below 72% of V
CB
, and with the built-in
delay this occurs 1.26ms after the external MOSFET
becomes fully enhanced. PGOOD (PGOOD) deasserts
any time the part enters fault management. PGOOD
(PGOOD) has a delayed response to UVLO. The GATE
goes to V
EE
when UVLO is brought below 1.125V for
1.5ms. This turns off the power MOSFET and allows
V
OUT
to rise depending on the RC time constant of the
load. PGOOD (PGOOD), in this situation, deasserts
when V
OUT
rises above V
CB
for more than 1.4ms or
above V
SC
, whichever occurs first (see Figure 12b).
Due to the open-drain driver, PGOOD (PGOOD)
requires an external pullup resistor to GND. Due to this
external pullup, PGOOD will not follow positive V
IN
steps as well as if it were driven by an active pullup. As
a result, when PGOOD (PGOOD) is asserted high, an
apparent negative glitch appears at PGOOD (PGOOD)
during a positive V
IN
step. This negative glitch is a
result of the RC time constant of the external resistor
and the PGOOD pin capacitance lagging the V
IN
step.
It is not due to switching of the internal logic. To mini-
mize this negative transient, it may be necessary to
increase the pullup current and/or to add a small
amount of capacitance from PGOOD (PGOOD) to GND
to compensate for the pin capacitance.
WARNING: For the MAX5936_N/MAX5937_N, PGOOD
(PGOOD) asserts 1.26ms after the power MOSFET is fully
enhanced, independent of V
OUT
. Once the MOSFET is
fully enhanced and UVLO is pulled below its respective
threshold, GATE pulls to V
EE
to turn off the power
MOSFET and disconnect the load. When UVLO is
cycled low, PGOOD (PGOOD) is deasserted. In sum-
mary, once the MOSFET is fully enhanced, the
MAX5936_N/ MAX5937_N ignore V
OUT
and deassert
PGOOD (PGOOD) when UVLO goes low or when the
power to the MAX5936_N/ MAX5937_N is fully recy-
cled.
Undervoltage Lockout (UVLO)
UVLO provides an accurate means to set the turn-on volt-
age level for the MAX5936/MAX5937. Use a resistor-
divider network from GND to V
EE
to set the desired
turn-on voltage (Figure 11). UVLO has hysteresis with a
rising threshold of 1.25V and a falling threshold of 1.125V.
A startup delay of 220ms allows contacts and voltages to
settle prior to initiating the startup sequence (Figure 12a).
Figure 9. MAX5936/MAX5937 Normalized Circuit-Breaker
Threshold (V
CB
)
NORMALIZED MOSFET ON-RESISTANCE
vs. TEMPERATURE
TEMPERATURE (癈)
60
35
10
-15
0.6
0.8
1.0
1.2
1.4
1.6
0.4
-40
85
IRF1310NS
NORMALIZED R
ON
IRFR3910
NORMALIZED R
ON
MAX5936/MAX5937
NORMALIZED V
CB
Figure 10. Circuit-Breaker Voltage Margin for High and Low Tempco Power MOSFETS
CIRCUIT-BREAKER
TRIP REGION
CIRCUIT-BREAKER
TRIP REGION
T
A
= +25癈
T
A
= +25癈
V
CB
I
D
x R
DS,ON
V
CB,MIN
V
CB,MIN
V
CB
I
D
x R
DS,ON
R
DS(ON)
HIGH TEMPCO
R
DS(ON)
LOW TEMPCO
TEMPERATURE
TEMPERATURE
相关PDF资料 |
PDF描述 |
|---|---|
| VE-25Z-CX-F4 | CONVERTER MOD DC/DC 2V 30W |
| VE-25Z-CX-F3 | CONVERTER MOD DC/DC 2V 30W |
| LCMXO2280C-3M132C | IC PLD 2280LUTS 101I/O 132-BGA |
| RS2B-13-F | DIODE FAST REC 100V 1.5A SMB |
| MAX5936ANESA+T | IC HOT-SWAP CTRLR -48V 8-SOIC |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX5936LBESA | 功能描述:热插拔功率分布 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 |
| MAX5936LBESA+ | 功能描述:热插拔功率分布 48V- Hot-Swap Controller 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 |
| MAX5936LBESA+T | 功能描述:热插拔功率分布 48V- Hot-Swap Controller 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 |
| MAX5936LBESA-T | 功能描述:热插拔功率分布 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 |
| MAX5936LCESA | 功能描述:热插拔功率分布 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 |
发布紧急采购，3分钟左右您将得到回复。