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参数资料
| 型号： | AS1339 EB |
| 厂商： | ams |
| 文件页数： | 7/26页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL AS1339 |
| 标准包装： | 1 |
| 主要目的： | DC/DC，LDO 步降 |
| 输出及类型： | 3，非隔离 |
| 输出电压： | 0.8 ~ 3.75 V，2.85V，2.85V |
| 电流 - 输出： | 650mA |
| 输入电压： | 2.7 ~ 5.5 V |
| 稳压器拓扑结构： | 降压 |
| 频率 - 开关： | 2MHz |
| 板类型： | 完全填充 |
| 已供物品： | 板 |
| 已用 IC / 零件： | AS1339 |
AS1339
Datasheet - E l e c t r i c a l C h a r a c t e r i s t i c s
Table 3. Electrical Characteristics (Continued)
Symbol
f OSC
Parameter
Internal Oscillator Frequency
Condition
Min
1.8
Typ
2
Max
2.2
Unit
MHz
BYPASS
Bypass Activation Factor
On-Resistance Bypass PFET
PFET Bypass Off-Leakage
Current
V REFIN rising, 50mV hysteresis
I SW = 200mA; T A = +25°C
I SW = 200mA
V IN = 5.5V,
V PAA = V PAB = 0V
2.56
2.69
110
0.1
2.78
200
230
3
V/V
m Ω
μA
LDO1/2
Output Voltage
Quiescent Current
Output Current
Current Limit
I OUT = 0mA, 10mA;
one LDO enabled
both LDOs enabled
V OUT = 0V
I OUT = 0mA
2.75
10
20
2.85
25
40
35
2.95
50
80
50
V
μA
mA
Dropout Voltage
3
I OUT = 10mA
20
50
mV
R OFF
Shutdown Output Impedance
V EN1/2 = 0V
100
Ω
1. Current into supply pins without leakage of DCDC switches.
2. Limited by the 50mV output voltage accuracy for V REFIN < 0.84V
3. The dropout voltage is the input to output difference at which the output is 100mV below its nominal value.
System Characteristics
V IN1A = V IN1B = V IN2 = V PA_EN = V EN1 = V EN2 = 3.9V, T A = -40oC to +85oC. Typical values are at T A =+25oC, (unless
otherwise specified), for external components refer to Table 5 on page 7 . The following parameters are verified by
characterisation and are not production tested.
Table 4. System Characteristics
Symbol
Parameter
Condition
Min
Typ
Max
Unit
REFIN
relative linearity
REFIN gain variation;
1
0.32V ≤ V REFIN ≤ 1.4V
3
%
REFIN gain variation;
0.84V ≤ V REFIN ≤ 1.4V
-2.4
2.4
%
absolute linearity
2
0.32V ≤ V REFIN ≤ 0.84V
-50
±10
50
mV
LX
Ripple voltage, PWM mode
3
V OUT = 0.8 to 3.4V, R LOAD = 8 Ω, no
bypass mode, no pulse-skip condition
10
25
V IN = 3.4 to 3.9V, V OUT = 3.0V,
Line_tr Line transient response
I OUT = 300mA, V IN increase 300mV in
10μs
30
50
mVp-p
V IN = 3.4 to 4.2V, V OUT = 3.0V,
Load_tr Load transient response
T RISE = T FALL = 10μs, I OUT = 100 to
50
70
300mA
Revision 1.05
6 - 25
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