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參數(shù)資料
| 型號： | MIC2583-MBQS |
| 廠商： | MICREL INC |
| 元件分類： | 電源管理 |
| 英文描述： | Single Channel Hot Swap Controllers |
| 中文描述： | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO16 |
| 封裝： | QSOP-16 |
| 文件頁數(shù)： | 3/22頁 |
| 文件大?。?/td> | 190K |
| 代理商： | MIC2583-MBQS |
April 2003
3
MIC2582/MIC2583
MIC2582/MIC2583
Pin Description
Micrel
Pin Name
8-pin SOIC
16-pin QSOP
Pin Function
/POR
1
1
Power-On Reset Output: Open drain N-channel device, Active Low. This pin
remains asserted during start-up until a time period (t
POR
) after the FB pin
voltage rises above the power-good threshold (V
FB
). The timing capacitor
C
POR
determines t
POR
. When the output voltage monitored at the FB pin
falls below V
FB
, /POR is asserted for a minimum of one timing cycle (t
POR
).
The /POR pin requires a pull-up resistor (10k
minimum) to VCC.
ON
2
3
ON Input: Active High. The ON pin, an input to a Schmitt-triggered compara-
tor used to enable/disable the controller, is compared to a 1.24V reference
with 50mV of hysteresis. When a logic high is applied to the ON pin
(V
ON
> 1.24V), a start-up sequence begins when the GATE pin starts
ramping up towards its final operating voltage. When the ON pin receives a
logic low signal (V
ON
< 1.19V), the GATE pin is grounded and /FAULT
remains high if VCC is above the UVLO threshold. ON must be low for 20
μ
s
in order to initiate a start-up sequence. Additionally, toggling the ON pin
LOW to HIGH resets the circuit breaker.
CPOR
3
4
Power-On Reset Timer: A capacitor connected between this pin and ground
sets the supply contact start-up delay (t
START
) and the power-on reset
interval (t
POR
). When VCC rises above the UVLO threshold, the capacitor
connected to CPOR begins to charge. When the voltage at CPOR crosses
0.3V, the start-up threshold (V
START
), a start cycle is initiated if ON is
asserted while capacitor C
POR
is immediately discharged to ground. When
the voltage at FB rises above V
FB
, capacitor CPOR begins to charge again.
When the voltage at CPOR rises above the power-on reset delay threshold
(V
TH
), the timer resets by pulling CPOR to ground, and /POR is de-asserted.
If C
POR
= 0, then t
START
defaults to 20
μ
s.
Ground connection: Tie to analog ground.
GND
4
7,8
FB
5
12
Power-Good Threshold Input (Undervoltage Detect): This input is internally
compared to a 1.24V reference with 30mV of hysteresis. An external
resistive divider may be used to set the voltage at this pin. If this input
momentarily goes below 1.24V, then /POR is activated for one timing cycle,
t
POR
, indicating an output undervoltage condition. The /POR signal de-
asserts one timing cycle after the FB pin exceeds the power-good threshold
by 30mV. A 5
μ
s filter on this pin prevents glitches from inadvertently
activating this signal.
GATE
6
14
Gate Drive Output: Connects to the gate of an external N-channel MOSFET.
An internal clamp ensures that no more than 9V is applied between the
GATE pin and the source of the external MOSFET. The GATE pin is
immediately brought low when either the circuit breaker trips or an
undervoltage lockout condition occurs.
SENSE
7
15
Circuit Breaker Sense Input: A resistor between this pin and VCC sets the
current limit threshold. Whenever the voltage across the sense resistor
exceeds the slow trip current limit threshold (V
TRIPSLOW
), the GATE voltage
is adjusted to ensure a constant load current. If V
TRIPSLOW
(50mV) is
exceeded for longer than time period t
OCSLOW
, then the circuit breaker is
tripped and the GATE pin is immediately pulled low. If the voltage across the
sense resistor exceeds the fast trip circuit breaker threshold, V
TRIPFAST
, at
any point due to fast, high amplitude power supply faults, then the GATE pin
is immediately brought low without delay. To disable the circuit breaker, the
SENSE and VCC pins can be tied together.
The default V
TRIPFAST
for either device is 100mV. Other fast trip thresholds
are available: 150mV, 200mV, or OFF (V
TRIPFAST
disabled). Please contact
factory for availability of other options.
VCC
8
16
Positive Supply Input: 2.3V to 13.2V. The GATE pin is held low by an
internal undervoltage lockout circuit until VCC exceeds a threshold of 2.2V. If
VCC exceeds 13.2V, an internal shunt regulator protects the chip from
transient voltages up to 20V at the VCC and SENSE pins.
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| MIC2583-MBQS TR | 功能描述:IC CTRLR HOT SWAP 200MV 16-QSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 熱交換 系列:- 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:100 系列:- 類型:熱插拔開關(guān) 應(yīng)用:通用 內(nèi)部開關(guān):是 電流限制:可調(diào) 電源電壓:9 V ~ 13.2 V 工作溫度:-40°C ~ 150°C 安裝類型:表面貼裝 封裝/外殼:10-WFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:10-TDFN-EP（3x3） 包裝:管件 |
| MIC2583-MYQS | 功能描述:熱插拔功率分布 Single-Channel Hot-Swap Controller - 200mV Fast-Trip Threshold - Lead Free RoHS:否 制造商:Texas Instruments 產(chǎn)品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| MIC2583-MYQS TR | 功能描述:熱插拔功率分布 Single-Channel Hot-Swap Controller - 200mV Fast-Trip Threshold - Lead Free RoHS:否 制造商:Texas Instruments 產(chǎn)品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| MIC2583R-JBQS | 功能描述:IC CTRLR HOT SWAP 100MV 16-QSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 熱交換 系列:- 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:100 系列:- 類型:熱插拔開關(guān) 應(yīng)用:通用 內(nèi)部開關(guān):是 電流限制:可調(diào) 電源電壓:9 V ~ 13.2 V 工作溫度:-40°C ~ 150°C 安裝類型:表面貼裝 封裝/外殼:10-WFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:10-TDFN-EP（3x3） 包裝:管件 |
| MIC2583R-JBQS TR | 功能描述:IC CTRLR HOT SWAP 100MV 16-QSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 熱交換 系列:- 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:100 系列:- 類型:熱插拔開關(guān) 應(yīng)用:通用 內(nèi)部開關(guān):是 電流限制:可調(diào) 電源電壓:9 V ~ 13.2 V 工作溫度:-40°C ~ 150°C 安裝類型:表面貼裝 封裝/外殼:10-WFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:10-TDFN-EP（3x3） 包裝:管件 |
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