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參數(shù)資料
| 型號： | TPS2205DF |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | DUAL-SLOT PC CARD POWER-INTERFACE SWITCH FOR PARALLEL PCMCIA CONTROLLERS |
| 中文描述： | 雙插槽PC卡電源接口開關(guān)并聯(lián)的PCMCIA控制器 |
| 文件頁數(shù)： | 24/28頁 |
| 文件大小： | 463K |
| 代理商： | TPS2205DF |
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TPS2205
DUAL-SLOT PC CARD POWER-INTERFACE SWITCH
FOR PARALLEL PCMCIA CONTROLLERS
SLVS128D OCTOBER 1995 – REVISED JUNE 1998
24
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
12-V flash memory supply
The TPS6734 is a fixed 12-V output boost converter capable of delivering 120 mA from inputs as low as
2.7 V. The device is pin-for-pin compatible with the MAX734 regulator and offers the following advantages: lower
supply current, wider operating input-voltage range, and higher output currents. As shown in Figure 1, the only
external components required are: an inductor, a Schottky rectifier, an output filter capacitor, an input filter
capacitor, and a small capacitor for loop compensation. The entire converter occupies less than 0.7 in
2
of PCB
space when implemented with surface-mount components. An enable input is provided to shut the converter
down and reduce the supply current to 3
μ
A when 12 V is not needed.
The TPS6734 is a 170-kHz current-mode PWM ( pulse-width modulation) controller with an n-channel MOSFET
power switch. Gate drive for the switch is derived from the 12-V output after start-up to minimize the die area
needed to realize the 0.7-
MOSFET and improve efficiency at input voltages below 5 V. Soft start is
accomplished with the addition of one small capacitor. A 1.22-V reference (pin 2) is brought out for external use.
For additional information, see the TPS6734 data sheet (SLVS127).
VCC
FB
OUT
GND
EN
REF
SS
COMP
1
2
3
4
8
7
6
5
TPS6734
3.3 V or 5 V
ENABLE
(see Note A)
+
33
μ
F, 20 V
L1
18
μ
H
12 V
C5
D1
U1
C4 0.001
μ
F
+
C1
C2
0.01
μ
F
R1
10 k
33
μ
F, 20 V
A_VCC5
A_VCC3
A_VPP_VCC
A_VPP_PGM
B_VCC5
B_VCC3
B_VPP_VCC
B_VPP_PGM
AVCC
AVCC
AVCC
BVCC
BVCC
BVCC
AVPP
AVPP
BVPP
BVPP
3.3V
3.3 V
To CPU
OC
5V
5 V
GND
3.3V
5V
3.3V
5V
12V
12V
TPS2205
1
μ
F
1
μ
F
0.1
μ
F
0.1
μ
F
SHDN
NOTE A: The enable terminal can be tied to a generall purpose I/O terminal on the PCMCIA controller or tied high.
Figure 33. TPS2205 with TPS6734 12-V, 120-mA Supply
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| TPS2205IDAP | 功能描述:熱插拔功率分布 1A Dual-Slot PC Card Power Switch 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 |
| TPS2205IDAP | 制造商:Texas Instruments 功能描述:IC PCMCIA PWR I/F SW 32-TSSOP 制造商:Texas Instruments 功能描述:IC, PCMCIA PWR I/F SW 32-TSSOP |
| TPS2205IDAPG4 | 功能描述:熱插拔功率分布 1A Dual-Slot PC Card Pwr Sw 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 |
| TPS2205IDAPR | 功能描述:熱插拔功率分布 1A Dual-Slot PC Card Power Switch 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 |
| TPS2205IDAPRG4 | 功能描述:熱插拔功率分布 1A Dual-Slot PC Card Power Switch 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 |
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