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參數(shù)資料
| 型號： | ST662 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | MOSFET; Transistor Polarity:N Channel; Drain Source Voltage, Vds:40V; Continuous Drain Current, Id:14A; On-Resistance, Rds(on):9mohm; Rds(on) Test Voltage, Vgs:10V; Package/Case:8-SOIC; Leaded Process Compatible:No |
| 中文描述： | DC - DC變換器從5V至12V，0.03A的閃存編程電源 |
| 文件頁數(shù)： | 5/12頁 |
| 文件大?。?/td> | 131K |
| 代理商： | ST662 |
DESCRIPTION
The ST662 is an IC developed to provide a 12V
regulated output 30mA from voltage input as low
as 4.75 without any inductors. It is useful for a
wide range of applications and its performances
makes it ideal for flash memory programming
supply.
An evaluation kit is provided to facilitate the
application. This include a single-side demo
board
designed
components.The operating principle of ST662
(see fig. 1) is to charge C1 and C2 capacitor by
closing the S1 switch (while S2 is opened) at the
V
CC
voltage. After S1 will be opened and S2
closed so that C1 and C2 capacitors are placed
in series one to each other, and both are in series
with Vin.The sum of VC1 and VC2 and Vin is
applied to the capacitor C4. This works as
voltage tripler. An amplifier error checks the
output voltage and blocks the oscillator if the
output voltage is greaterthan 12V.
The shutdown pin is internally pulled to V
CC
.
When it is held low the output voltage rises to
+12V. Fig.2 shows the transition time of the shut
down pin when the VSHDN goes from 5V to 0V.
Input logic levels of this input are CMOS
compatible.
Applying a logic high at this input, the V
OUT
oscillator will be blocked and the V
OUT
will reach
theV
IN
value by D1. In this condition I
CC
will be
for
surface-mount
Figure 1:
OperatingPrinciple Circuit
low as 1
μ
A. The fig.3 shows the transition time
of the shut down pin whenthe VSHDNgoes from
0V to 5V.
Figure2:
Exiting Shutdown
TIME= 20us/DIV, VERTICAL = 5V/DIV
5V
0V
12V
5V
SHDN
Vout
Figure 3:
EnteringShutdown
TIME= 1ms/DIV, VERTICAL = 5V/DIV
5V
0V
12V
5V
SHDN
Vout
NOTE: V
CC
= 5V, I
OUT
= 200
μ
A
NOTE: V
CC
= 5V, I
OUT
=200
μ
A
ST662A
5/12
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ST662ABD | MOSFET; Transistor Polarity:N Channel; Continuous Drain Current, Id:14A; On-Resistance, Rds(on):0.006ohm; Package/Case:8-SOIC; Leaded Process Compatible:No; Mounting Type:surface mount; Peak Reflow Compatible (260 C):No |
| ST662ABN | DC-DC CONVERTER FROM 5V TO 12V, 0.03A FOR FLASH MEMORY PROGRAMMING SUPPLY |
| ST662AC | TRANSISTOR - MOSFET N-CHANNEL POWER 5.2A 60V |
| ST662ACD | MOSFET; Transistor Polarity:N Channel; Drain Source Voltage, Vds:60V; Continuous Drain Current, Id:8.5A; On-Resistance, Rds(on):22mohm; Rds(on) Test Voltage, Vgs:10V; Package/Case:8-SOIC; Leaded Process Compatible:Yes |
| ST662ACN | MOSFET; Transistor Polarity:N Channel; Package/Case:8-SOIC; Leaded Process Compatible:No; Mounting Type:Surface Mount; Peak Reflow Compatible (260 C):No; Voltage Rating:30V |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ST662A | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:DC-DC CONVERTER FROM 5V TO 12V, 0.03A FOR FLASH MEMORY PROGRAMMING SUPPLY |
| ST662A_04 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:DC-DC CONVERTER FROM 5V TO 12V, 0.03A FOR FLASH MEMORY PROGRAMMING SUPPLY |
| ST662AB | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:DC-DC converter from 5 V to 12 V, 0.03 A for Flash memory programming supply |
| ST662AB_08 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:DC-DC converter from 5 V to 12 V, 0.03 A for Flash memory programming supply |
| ST662ABD | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 5.0 to 12V DC-DC Cnv RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT |
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