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參數(shù)資料
| 型號(hào)： | MAX1600 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Dual-Channel CardBus and PCMCIA VCC/VPP Power-Switching(內(nèi)部Vcc、Vpp開(kāi)關(guān)，限流，熱保護(hù)，PCMCIA電源切換芯片) |
| 中文描述： | 雙通道CardBus和PCMCIA VCC VPP電源開(kāi)關(guān)網(wǎng)絡(luò) |
| 文件頁(yè)數(shù)： | 10/12頁(yè) |
| 文件大?。?/td> | 160K |
| 代理商： | MAX1600 |
M
Dual-Channel CardBus and PCMCIA V CC/V PP
Power-S witc hing Networks
10
______________________________________________________________________________________
controlled, and makes them nearly independent of resis-
tive and capacitive loads (see rise-time photos in the
Typical Operating Characteristics). Fall times are a
function of loading, and are compensated by internal
circuitry.
Power savings is automatic: internal charge pumps draw
very low current when the VCC switches are static.
Standby mode reduces switch supply current to 1μA.
Driving the VL pin low with an external logic gate (master
shutdown) reduces total supply current to1μA (Figure 2).
Operating Modes
The MAX1600/MAX1603 are compatible with the Cirrus
CL-PD67XX, Databook DB86184, and Intel 82365SL PC
Card Interface Controllers (PCIC). Eight control inputs
select the internal switches’ positions and the operating
modes according to the input code. Select the proper
code format for the chosen controller with the CODE
input pin (see Pin Description and Tables 1, 2, and 3).
CODE reconfigures the logic decoder to one of three
interface controllers:
Low = Standard “Intel” code (Figure 5)
High = “Cirrus” code (Figure 4)
Midsupply = “Databook” code (Figure 6)
An additional 1μA (3μA max) of VL supply current will
flow if CODE = midsupply (VL / 2).
The MAX1600/MAX1603 have three operating modes:
normal, standby, and shutdown. Normal mode supplies
the selected outputs with their appropriate supply volt-
ages. Standby mode places all switches at ground,
high impedance, or a combination of the two. Shutdown
mode turns all switches off, and puts the VCC and VPP
outputs into a high-impedance state. Pull VL low to
enter shutdown mode. To ensure a 0.05V/μs fall rate on
VL, use a 1k
series resistor and a 0.1μF capacitor to
ground (Figure 2).
Overc urrent Protec tion
Peak detecting circuitry protects both the VCC and VPP
switches against overcurrent conditions. When current
through any switch exceeds the internal current limit
(4A for VCC switches and 200mA for VPP switches) the
switch turns off briefly, then turns on again at the con-
trolled rise rate. If the overcurrent condition lasts more
than 2μs, the
FAULT
output goes low.
FAULT
is not
latched. A continuous short-circuit condition results in a
pulsed output current and a pulsed
FAULT
output until
thermal shutdown is reached.
FAULT
is open-drain and
requires an external pull-up resistor.
T hermal S hutdown
If the IC junction temperature rises above +150°C, the
thermal shutdown circuitry opens all switches, including
the GND switches, and
FAULT
is pulled low. When the
temperature falls below +130°C, the switches turn on
again at the controlled rise rate. If the overcurrent con-
dition remains, the part cycles between thermal shut-
down and overcurrent.
Undervoltage Loc kout
If the VX or VY switch input voltage drops below 1.5V,
the associated switch turns off and
FAULT
goes low.
For example, if VY is 3.3V and VX is 0V, and if the inter-
face controller selects VY, the VCCA output will be
3.3V. If VX is selected, VCCA changes to a high-imped-
ance output and
FAULT
goes low.
When a voltage is initially applied to 12IN_, it must be
greater than 8V to allow the switch to operate.
Operation continues until the voltage falls below 2V (the
VPP output is high impedance).
When VL drops to less than 2.3V, all switches are
turned off and the VCC and VPP outputs are high
impedance.
MAX1600
MAX1603
1k
0.1
μ
F
74HC04
VL
VY
VCCA
VPPA
3.3V
VPPB
VCCB
TO
SOCKETS
A AND B
Figure 2. Master Shutdown Circuit
MAX1600
MAX1603
VL
VX
+5V
VY
Figure 3. Applying Power to the VL Input
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX16000ATC | 制造商:Maxim Integrated Products 功能描述:LOW-VOLTAGE, QUAD-/HEX-/OCTAL-VOLTAGE MICROPR - Rail/Tube |
| MAX16000ATC+ | 功能描述:監(jiān)控電路 Quad/Hex/Octal Volt uP Supervisor RoHS:否 制造商:STMicroelectronics 監(jiān)測(cè)電壓數(shù): 監(jiān)測(cè)電壓: 欠電壓閾值: 過(guò)電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開(kāi)關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| MAX16000ATC+T | 功能描述:監(jiān)控電路 Quad/Hex/Octal Volt uP Supervisor RoHS:否 制造商:STMicroelectronics 監(jiān)測(cè)電壓數(shù): 監(jiān)測(cè)電壓: 欠電壓閾值: 過(guò)電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開(kāi)關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| MAX16000BTC | 制造商:Maxim Integrated Products 功能描述:LOW-VOLTAGE, QUAD-/HEX-/OCTAL-VOLTAGE MICROPR - Rail/Tube |
| MAX16000BTC+ | 功能描述:監(jiān)控電路 Quad/Hex/Octal Volt uP Supervisor RoHS:否 制造商:STMicroelectronics 監(jiān)測(cè)電壓數(shù): 監(jiān)測(cè)電壓: 欠電壓閾值: 過(guò)電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開(kāi)關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
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