- 您现在的位置：买卖IC网 > PDF目录19761 > MAX5925BEUB+ (Maxim Integrated)IC HOT-SWAP CTRLR N-CH 10-UMAX PDF资料下载
参数资料
| 型号： | MAX5925BEUB+ |
| 厂商： | Maxim Integrated |
| 文件页数： | 12/21页 |
| 文件大小： | 333K |
| 描述： | IC HOT-SWAP CTRLR N-CH 10-UMAX |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| 类型： | 热交换控制器 |
| 应用： | 通用 |
| 内部开关： | 无 |
| 电源电压： | 1 V ~ 13.2 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-TFSOP，10-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 10-µMAX |
| 包装： | 管件 |
1V to 13.2V, n-Channel Hot-Swap Controllers
Require No Sense Resistor
12 ______________________________________________________________________________________
Load Probing
The MAX5924/MAX5925/MAX5926 load-probing circuit-
ry detects short-circuit conditions during startup. Load
probing is active only when no external R
SENSE
is
detected. As the device begins load probing, SC_DET
is connected to V
CC
through an internal switch with an
on-resistance of R
LP
(Figure 6). V
CC
then charges the
load with a probe current limited at H200mA.
I
PROBE
= (V
CC
- V
OUT
)/(R
LP
+ R
SC
) (Figure 1)
If the load voltage does not reach V
LP,TH
(0.2V typ)
within t
LP
, a short-circuit fault is detected and the start-
up mode is terminated according to the selected fault-
management mode (see the Fault Management section
and Figure 5). If no fault condition is present,
PGOOD/PGOOD asserts at the end of the startup peri-
od (see the Turn-On Waveforms in the Typical
Operating Characteristics).
Load probing can only be, and must be, employed
when not using an external R
SENSE
.
Normal Operation
In normal operation, after startup is complete, protec-
tion is provided by turning off the external MOSFET
when a fault condition is encountered. Dual-speed/
bilevel fault protection incorporates two comparators
with different thresholds and response times to monitor
the current:
1) Slow comparator. This comparator has a 1.6ms
(typ) response time. The slow comparator ignores
low-amplitude momentary current glitches. After an
extended overcurrent condition, a fault is acknowl-
edged and the MOSFET gate is discharged.
2) Fast comparator. This comparator has a quick
response time and a higher threshold voltage. The
fast comparator turns off the MOSFET immediately
when it detects a large high-current event such as a
short circuit.
In each case, when a fault is encountered, the power-
good output deasserts and the device drives GATE low.
After a fault, the MAX5924A, MAX5924B, MAX5925A,
and MAX5925B latch GATE low and the MAX5924C,
MAX5924D, MAX5925C, and MAX5925D enter the
autoretry mode. The MAX5926 has selectable latched or
autoretry modes. Figure 7 shows the slow comparator
response to an overcurrent fault.
V
CC
(V)
12
10
8
6
4
6
8
10
12
14
4
2
14
V
CC
= V
S
Figure 6. Load-Probe Resistance vs. Supply Voltage
V
GATE
PGOOD*
V
OUT
I
LOAD
I
LIM
3.0V TO 6.7V
PGOOD**
*MAX5924B, MAX5924D, MAX5925B, MAX5925D, AND MAX5926 ONLY.
**MAX5924A, MAX5924C, MAX5925A, MAX5925C, AND MAX5926 ONLY.
t
CBS
V
THPGOOD
Figure 7. Slow Comparator Response to an Overcurrent Fault
t
PROBE
< t
LP
I
INRUSH
C
L
= LARGE
C
L
= SMALL
V
OUT
V
OUT
I
LOAD
I
LOAD
I
PROBE
V
LP,TH
(0.2V typ)
SR = dV
dt
C
L
= SMALL
SR = dV
dt
Figure 5. Startup Waveform
相关PDF资料 |
PDF描述 |
|---|---|
| TAP225J010BRS | CAP TANT 2.2UF 10V 5% RADIAL |
| GEM22DRYN | CONN EDGECARD 44POS DIP .156 SLD |
| MIC2212-LPBML TR | IC REG LDO 2.7V/3V 10-MLF |
| ECM02DSXN | CONN EDGECARD 4POS DIP .156 SLD |
| VE-BTJ-CY-F1 | CONVERTER MOD DC/DC 36V 50W |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX5925BEUB+ | 功能描述:热插拔功率分布 1-13.2V 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 |
| MAX5925BEUB+T | 功能描述:热插拔功率分布 1-13.2V 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 |
| MAX5925BEUB-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 |
| MAX5925CEUB | 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 |
| MAX5925CEUB+ | 功能描述:热插拔功率分布 1-13.2V 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 |
发布紧急采购，3分钟左右您将得到回复。