参数资料
型号: LTC1682CS8-3.3#TR
厂商: Linear Technology
文件页数: 5/12页
文件大小: 0K
描述: IC REG MULTI CONFIG 3.3V 8SOIC
标准包装: 2,500
类型: 升压(升压),切换电容(充电泵),倍增器
输出类型: 固定
输出数: 1
输出电压: 3.3V
输入电压: 1.8 V ~ 4.4 V
PWM 型: Burst Mode?
频率 - 开关: 550kHz
电流 - 输出: 90mA
同步整流器:
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 8-SOIC(0.154",3.90mm 宽)
包装: 带卷 (TR)
供应商设备封装: 8-SOIC
LTC1682/LTC1682-3.3/LTC1682-5
TYPICAL PERFOR A CE CHARACTERISTICS
V OUT Voltage vs Temperature
V OUT Voltage vs Output Current
5.030
5.020
5.010
5.000
4.990
3.340
3.330
3.320
3.310
3.300
3.290
1.240
1.238
1.236
1.234
V IN = 3V
I OUT = 10mA
LTC1682-5
LTC1682-3.3
LTC1682
5.000
4.999
4.998
4.997
4.996
4.995
4.994
4.993
3.300
3.299
3.298
3.297
3.296
3.295
3.294
V IN = 3.3V
T A = 25 ° C
LTC1682-5
LTC1682-3.3
–50
–25
0
25
50
75
100
125
0
5
10 15 20 25 30 35 40 45 50
TEMPERATURE ( ° C)
1682 G09
PI N FU N CTIO N S
V OUT (Pin 1): Low Noise Regulated Output Voltage. V OUT
should be bypassed with a ≥ 2 μ F low ESR capacitor as
close to the pin as possible for best performance. The V OUT
range is 2.5V to 5.5V.
SHDN (Pin 2): Shutdown Input. A logic low on the SHDN
pin puts the part in shutdown mode. A logic high enables
the part. To continuously enable the part connect SHDN to
V IN . When the part is in shutdown, V OUT will be connected
to ground via a 100 ? switch and CPO will be high
impedance disconnected from V IN .
FB (Pin 3) (LTC1682): The voltage on this pin is compared
to the internal reference voltage (1.235V) by the error
amplifier to keep the output in regulation. An external
resistor divider is required between V OUT and FB to adjust
the output voltage.
OUTPUT CURRENT (mA)
1682 G10
FILT (Pin 3) (LTC1682-3.3/LTC1682-5): This pin is used
to filter the internal voltage reference. Typically a 1nF
capacitor is connected from FILT to ground.
GND (Pin 4): System Ground.
C – (Pin 5): Flying Capacitor Negative Input.
V IN (Pin 6): Input Voltage, 1.8V to 4.4V. V IN should be
bypassed with a ≥ 2 μ F low ESR capacitor as close to the
pin as possible for best performance. A minimum capaci-
tance value of 0.1 μ F is required.
C + (Pin 7): Flying Capacitor Positive Input.
CPO (Pin 8): Unregulated Charge Pump Output Voltage.
Approximately 1.95(V IN ) at low loads. Bypass with a ≥ 2 μ F
low ESR capacitor. If a minimum V OUT enable time is
required, the CPO capacitor should be 2 × the V OUT
capacitor.
5
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