参数资料
型号: AS3543-ECTP
厂商: ams
文件页数: 26/92页
文件大小: 0K
描述: IC CODEC AUDIO FRONT END 68CTBGA
标准包装: 4,000
类型: 音频编解码器
应用: 便携式音频,电话
安装类型: 表面贴装
封装/外壳: 68-TFBGA
供应商设备封装: 68-CTBGA(6x6)
包装: 带卷 (TR)
www.austriamicrosystems.com
Revision 1.11
31 - 91
AS3543 3v2
Data Sheet - D e t a i l e d D e s c r i p t i o n - P o w e r M a n a g e m e n t F u n c t i o n s
9.1.4
LDO3 & LDO4
These LDOs can be used to generate the periphery voltage for the digital processor or other external components (e.g.
ext. DAC, USB-PHY, SD-Cards, NAND-Flashes, FM-Tuner …)
LDO3 has a separate input pin (BVDDP1) which can be connected to either the battery or a DCDC converter output.
Input Voltage BVDDP1 or BVDD
Output Voltage is PVDD1 & PVDD2 (1.2 to 3.5V)
Default value at start-up is defined by VPRG2 pin
Driver strength: 100mA, can be programmed to 200mA
9.1.5
Parameter
BVDD=3.6V, TA= 25
o
C, unless otherwise mentioned
Table 20. LDO Parameter
Symbol
Parameter
Condition
Min
Typ
Max
Unit
RON
On resistance
1
PSRR
Power supply rejection ratio
f=1kHz
70
dB
f=100kHz
40
IOFF
Shut down current
100
nA
IVDD
Supply current
without load
50
A
Noise
Output noise
10Hz < f < 100kHz
50
Vrms
tstart
Startup time
200
s
Vout_tol
Output voltage tolerance
minimum +/- 50mV
-2.5%
2.5%
mV
VLineReg
Line regulation
LDO2, Static
<1
mV
LDO2, Transient; Slope: tr=10s
<10
VLoadReg
Load regulation
LDO2, Static
<1
mV
LDO2, Transient; Slope: tr=10s
<10
ILIMIT
Current limitation
LDO1
100
LDO2, LDO3, LDO4
200
mA
LDO2, LDO3 and LDO4, has to be
enabled via register 18h-1, 18h-2, 18h-3
350
ams
AG
Technical
content
still
valid
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