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參數(shù)資料
| 型號： | TPS2212DB |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | SINGLE-SLOT, PARALLEL INTERFACE POWER SWITCH FOR LOW POWER PC CARD SLOTS |
| 中文描述： | 單槽，并行接口電源開關(guān)的低功率的PC卡插槽 |
| 文件頁數(shù)： | 18/20頁 |
| 文件大?。?/td> | 296K |
| 代理商： | TPS2212DB |
TPS2212
SINGLE-SLOT, PARALLEL INTERFACE POWER SWITCH
FOR LOW POWER PC CARD SLOTS
SLVS193 – APRIL 1999
18
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 26, 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
C5
D1
U1
C4 0.001
μ
F
+
C1
C2
0.01
μ
F
R1
10 k
33
μ
F, 20 V
VCC
VCC
VCC
VPP
VCCD0
VCCD1
VPPD0
VPPD1
OC
SHDN
GND
0.1
μ
F
0.1
μ
F
To CPU
TPS2212
12V
5V
5V
1
μ
F
0.1
μ
F
5 V
3.3V
3.3V
1
μ
F
0.1
μ
F
3.3 V
12 V
VPPI
NOTE A: The enable terminal can be tied to a generall purpose I/O terminal on the PCMCIA controller or tied high.
Figure 26. TPS2212 with TPS6734 12-V, 120-mA Supply
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| TPS2212IDB | 功能描述:熱插拔功率分布 0.3A Sngl-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 |
| TPS2212IDBG4 | 功能描述:熱插拔功率分布 0.3A Sngl-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 |
| TPS2212IDBR | 功能描述:熱插拔功率分布 0.3A Sngl-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 |
| TPS2212IDBRG4 | 功能描述:熱插拔功率分布 0.3A Sngl-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 |
| TPS2214 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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