参数资料
型号: LTC1754ES6-3.3#TRM
厂商: Linear Technology
文件页数: 5/12页
文件大小: 0K
描述: IC REG SWITCHED CAP 3.3V SOT23-6
标准包装: 500
类型: 切换式电容器(充电泵)
输出类型: 固定
输出数: 1
输出电压: 3.3V
输入电压: 2 V ~ 4.4 V
PWM 型: Burst Mode?
频率 - 开关: 600kHz
电流 - 输出: 40mA
同步整流器:
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: SOT-23-6
包装: 带卷 (TR)
供应商设备封装: SOT-23-6
其它名称: LTC1754ES6-3.3
LTC1754ES6-3.3-ND
LTC1754-3.3/LTC1754-5
TYPICAL PERFOR A CE CHARACTERISTICS
LTC1754-3.3. LTC1754-5, T A = 25 ° C unless otherwise noted.
Efficiency vs Supply Voltage
Oscillator Frequency
vs Supply Voltage
V SHDN Threshold Voltage
vs Supply Voltage
100
90
80
70
60
50
40
LTC1754-3.3
I OUT = 20mA
LTC1754-5
I OUT = 25mA
T A = 25 ° C
C FLY = 1 μ F
850
800
750
700
650
600
550
500
T A = 85 ° C
T A = 25 ° C
T A = –40 ° C
0.95
0.90
0.85
0.80
0.75
0.70
T A = –40 ° C
T A = 25 ° C
T A = 85 ° C
30
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
450
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
0.65
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
SUPPLY VOLTAGE (V)
PI FU CTIO S
1754 G19
SUPPLY VOLTAGE (V)
1754 G20
SUPPLY VOLTAGE (V)
1754 G21
V OUT (Pin 1): Regulated Output Voltage. For best perfor-
mance, V OUT should be bypassed with a 6.8 μ F (min) low
ESR capacitor as close as possible to the pin.
GND (Pin 2): Ground. Should be tied to a ground plane for
best performance.
SHDN (Pin 3): Active Low Shutdown Input. A low on
SHDN disables the LTC1754. SHDN must not be allowed
to float.
SI PLIFIED BLOCK DIAGRA
C – (Pin 4): Flying Capacitor Negative Terminal.
V IN (Pin 5): Input Supply Voltage. V IN should be bypassed
with a 6.8 μ F (min) low ESR capacitor.
C + (Pin 6): Flying Capacitor Positive Terminal.
V OUT
C OUT
10 μ F
*
2
1
C +
C FLY
1 μ F
V IN
+
C IN
10 μ F
COMP1
V REF
CONTROL
2
1
C –
SHDN
1754 BD
*CHARGE PUMP SHOWN IN PHASE 1, THE CHARGING PHASE.
PHASE 1 IS ALSO THE SHUTDOWN PHASE
5
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