参数资料
型号: AT73C209-EK
厂商: Atmel
文件页数: 29/63页
文件大小: 0K
描述: BOARD EVAL FOR AT73C209
标准包装: 1
系列: PMAAC™
主要目的: 电源管理,专用型: 手机
已用 IC / 零件: AT73C209
已供物品: 板,CD,文档
AT73C209
9.1.4
Electrical Specifications
Conditions
L = 10 μH (0.1 Ohms ESR)
C = 22μF (0.1 Ohm ESR)
Schottky Diode: MBRA120LT3
IN = 1.2V
-40°C <TA < +85°C
OUT = 0mA-100mA
FB = + 3.3V, typical values at 27°C unless otherwise noted.
.No load current in start-up phase (load resistor higher than 10 KOhms).
Table 9-1.
DC to DC Boost Converter (SW1)Electrical Characteristics
Symbol
I N
V FB
Parameter
Input Voltage
Output Voltage
Conditions
DC_SEL_VOUT = 00
Min
0.9
3.10
Typ
1.2
3.3
Max
1.8
3.45
Unit
V
V
I SD
I L
Shutdown Current
Inductor Current Limitation
DC/DC is Off
IN = 1.2V, V FB > 2.4V
600
10
μA
mA
Ic
Output Current
50
100
mA
I N = 1.2V, V FB = 0.95 * 3.3
t START
Start Up Time
From disabled to enabled
5
ms
RLOAD = 10 kOhms
R NMOS
NMOS switch resistance
V FB = 3.3V
Load of 3 mA and I N = 1.2V
45
0.2
50
Ohms
Yield
Power efficiency
Load of 50 mA and I N = 1.2V
65
70
%
Load of 100 mA and I N = 1.2V
65
70
t R_LOAD
Transient Load Regulation
I N =1.2V, Iout = 0 to 100 mA in 0.5μs
30
mV
Load of 10 mA, I N = 1.2V
V FB = 3.3V and 100 mOhms Rsense
30
F RIPP
Frequency Ripple
Load of 50 mA, I N = 1.2V
V FB = 3.3V and 100 mOhms Rsense
50
mV
Load of 100mA, I N = 1.2V
V FB = 3.3V and 100 mOhms Rsense
60
9.1.5
Control Modes
FB Voltage Selection
29
6365A–PMAAC–12-Mar-08
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