参数资料
型号: AS3658F-BCTP
厂商: ams
文件页数: 73/158页
文件大小: 0K
描述: IC PMU POWER/AUDIO 124-CTBGA
标准包装: 2,500
应用: 便携式设备
电流 - 电源: 7mA
电源电压: 3 V ~ 5.5 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 124-TFBGA
供应商设备封装: 124-CTBGA(8x8)
包装: 带卷 (TR)
AS3658
Data Sheet Confidential
- Detailed Description-Power Management Functions
100% PMOS ON mode for low dropout regulation: For low input to output voltage difference the sdX_dis_pon bit
can be set, to allow 100% duty cycle of the PMOS transistor.
Low power mode: The sdX_lpo mode bit can be set all the time. This mode allows internal power down, of not used
blocks during pulseskip mode, which results in a better efficiency at light output loads.
Inductor setting: The step down regulator is optimized for 2.2μH at 2.2MHz and 4.7μH at 1.1MHz
Table 61. Step Down DC/DC Converter parameters
Symbol
V IN
V OUT
V OUT_tol
Parameter
Input voltage
Regulated output
voltage
Output voltage
tolerance
Min
3.0
0.6
-50
-100
Typ
Max
5.5
3.3
+50
+100
Unit
V
V
mV
mV
Note
PIN VSUPPLY_1,VSUPPLY_2,
VSUPPLY_3
output voltage <2.0V
output voltage >2.0V
I LIMIT
Current limit
800
mA
R PSW
R NSW
P-Switch ON
resistance
N-Switch ON
resistance
0.5
0.5
Ω
Ω
V_SUPPLYx=3.0V
V_SUPPLYx=3.0V
I load
Load current
0
500
mA
f SW
η eff
Switching frequency
Efficiency
2.2
1.1
90
MHz
MHz
%
sdX_frequ=0, f clk_int =2.2MHz
sdX_frequ=1, f clk_int =2.2MHz
Iout=100mA, Vout=2.3V, Vsup.=3V
250
Operating current without load
I VDD
Current consumption
100
0.1
μA
Low power mode current
Shutdown current
t MIN_ON
t MIN_OFF
Minimum on time
Minimum off time
80
40
ns
ns
External Components
C VSD1-3, C VSD1A
Output capacitor
8.0
10
μF
Ceramic X5R or X7R
2.2
μF
Ceramic X5R or X7R
C VSUPPLY1-3
Input capacitor
4.7
μF
Ceramic X5R or X7R; C VSUPPLY1
in external controller mode or 1A
operating mode
2.2
sdX_frequ=0, ± 10% tolerance
L SD1-SD3
Inductor
4.7
μH
sdX_frequ=1, ± 10% tolerance
2.2
SD1 external controller mode; use
sd1_freq=1 (1.1Mhz)
www.austriamicrosystems.com
Revision 1v13
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