参数资料
型号: AT73C224-A
厂商: Atmel
文件页数: 59/75页
文件大小: 0K
描述: IC PWR MGMT ANALOG PMAAC 32QFN
标准包装: 490
应用: 手持/移动设备
电源电压: 2.8 V ~ 5.25 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 32-VFQFN 裸露焊盘
供应商设备封装: 32-QFN(5x5)
包装: 托盘
AT73C224
7.5
BOOST1: Step-up Converter
Table 7-5.
BOOST1 Electrical Characteristics
Symbol
VDD1
Fs
Parameter
Operating Supply Voltage
Converter Frequency
Conditions
Min
2.8
400
Typ
3.6
900
Max
5.25
1400
Unit
V
kHz
I O
Load Current
1
A
7
VO1
Error
I sc
I LIM
η2.8 _3.3_1A
h3.6_5.2_1A
t START
? V O1_5.2V
? V O1_5.2V
? V O1_5.2V
Output Voltage
Output voltage precision
Shutdown Current
Current Limitation
Efficiency at VDD1 = 2.8 V
Efficiency at VDD1 = 3.6 V
Start-up Time
Ripple Voltage
Static Line Regulation
Static Load Regulation
BST_VOLT register (@12) - Step 100 mV
VDD1 < VO1
Iload > 100 mA
BST_CLR register (@10); EN = 0
BST_CFG register (@11)
I O = 1 A, VDD1 = 2.8V, VO1 = 3.3V
I O = 1 A, VDD1 = 3.3V, VO1 = 5.2V
No load
peak-to-peak, I O = 1 A, VO1 = 5.2V
Bandwidth = 20 MHz
VDD1: 2.8 to 4.2V - I O = 1 A - VO1 = 5.2V
VDD1: 3.6V - I O : 100 mA to 900 mA -
VO1 = 5.2V
3.2
-10
0.5
90
85
200
200
200
50
5.2
-10
1
V
%
μA
A
%
%
μs
mV
mV
mV
Note:
1. Before the BOOST is turned on, it is recommended to establish low current limitation (typic: 1 Amp) to avoid current peak on
main supply.
59
6266A–PMAAC–08-Sep-08
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