收藏本站
参数资料
型号： AS1322B-BTTT
厂商： AUSTRIAMICROSYSTEMS AG
元件分类： DC/DC变换器
英文描述： Adj., 315mA, 1.2 MHz, Boost; Package Type: TSOT23-6; Miscellaneous: with Continuous Switching
中文描述： 低电压，微功耗，型DC - DC升压转换器
封装： TSOT23-6
文件页数： 2/18页
文件大小： 900K
代理商： AS1322B-BTTT
2 - 18
AS1322
Datasheet - Pin Assignments
4 Pin Assignments
Figure 2. Pin Assignments (Top View)
4.1 Pin Descriptions
Table 2. Pin Descriptions
Pin Number
Pin Name
Description
1
SW
Switch Pin
. Connect an inductor between this pin and V
IN
. Keep the PCB trace lengths as
short and wide as is practical to reduce EMI and voltage overshoot. If the inductor current
falls to zero, or pin SHDNN is low an internal 100
Ω
anti-ringing switch is connected fromthis
pin to V
IN
to mnimze EMI.
Note:
An optional Schottky diode can be connected between this pin and V
OUT
.
Signal and Power Ground
. Provide a short, direct PCB path between this pin and the
negative side of the output capacitor(s).
Feedback Pin
. Feedback input to the g
m
error amplifier. Connect a resistor divider tap to this
pin. The output voltage can be adjusted from2.5 to 5V by: V
OUT
= 1.23V[1 + (R
1
/R
2
)]
Shutdown Pin
. Logic controlled shutdown input.
1 = Normal operation, 1.2MHz typical operating frequency.
0 = Shutdown; quiescent current <1μA. If SHDNN is undefined, pin SW may ring.
Note:
In a typical application, SHDNN should be connected to V
IN
through a 1M
Ω
pull-up
resistor.
Output Voltage Sense Input and Drain of the Internal PMOS Synchronous Rectifier
.
Bias is derived fromV
OUT
when V
OUT
exceeds V
IN
. PCB trace length fromV
OUT
to the
output filter capacitor(s) should be as short and wide as is practical. V
OUT
is held at
approximately V
IN
- 0.6V during shutdown.
Input Voltage
. The AS1322 gets its start-up bias fromV
IN
unless V
OUT
exceeds V
IN
, in
which case the bias is derived fromV
OUT
. Thus, once started, operation is completely
independent fromV
IN
. Operation is only limted by the output power level and the internal
series resistance of the supply.
2
GND
3
FB
4
SHDNN
5
VOUT
6
VIN
1
SW
AS1322
2
GND
3
FB
6
VIN
5
VOUT
4 SHDNN
相关PDF资料
PDF描述
AS1323-BTTT-27 1.6μA Iq, Single Cell, Boost; Package Type: TSOT23-5; Output Range: 2.7V
AS1323-BTTT-30 1.6μA Iq, Single Cell, Boost; Package Type: TSOT23-5; Output Range: 3.0V
AS1323-BTTT-33 1.6μA Iq, Single Cell, Boost; Package Type: TSOT23-5; Output Range: 3.3V
AS1324-BTTT-AD 600mA Buck Converter; Package Type: TSOT23-5; Output Range: 0.6V to Vin
AS1324-BTTT-12 600mA Buck Converter; Package Type: TSOT23-5; Output Range: 1.2V
相关代理商/技术参数
参数描述
AS1322-EB 制造商:ams 功能描述:AS1322 Evaluation Board
AS1-322-W3-302 制造商:TE Connectivity 功能描述:
AS1323 制造商:AMSCO 制造商全称:austriamicrosystems AG 功能描述:1.6uA Quiescent Current, Single Cell, DC-DC Step-up Converter
AS1323_04 制造商:AMSCO 制造商全称:austriamicrosystems AG 功能描述:1.6??A Quiescent Current, Single Cell, DC-DC Step-up Converter
AS1323_1 制造商:AMSCO 制造商全称:austriamicrosystems AG 功能描述:1.6uA Quiescent Current, Single Cell, DC-DC Step-up Converter
发布紧急采购，3分钟左右您将得到回复。