参数资料
型号: LTC1751EMS8-3.3#PBF
厂商: Linear Technology
文件页数: 3/12页
文件大小: 0K
描述: IC REG SWITCHED CAP DBL 8MSOP
标准包装: 50
类型: 切换式电容器(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: 2.5 V ~ 5.5 V
PWM 型: 电流模式,混合
频率 - 开关: 800kHz
电流 - 输出: 125mA
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: 8-TSSOP,8-MSOP(0.118",3.00mm 宽)
包装: 管件
供应商设备封装: 8-MSOP
产品目录页面: 1339 (CN2011-ZH PDF)
LTC1751/LTC1751-3.3/LTC1751-5
ELECTRICAL CHARACTERISTICS The q denotes specifications which apply over the full specified
temperature range, otherwise specifications are at T A = 25 ° C. C FLY = 1 μ F, C IN = 10 μ F, C OUT = 10 μ F unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
LTC1751-3.3/LTC1751-5
UVL
PGOOD Undervoltage Low Threshold
Relative to Regulated V OUT (Note 6)
q
–11
–7
–3
%
UVH
V OL
I OH
PGOOD Undervoltage High Threshold Relative to Regulated V OUT (Note 6)
I PGOOD = – 500 μ A
PGOOD Low Output Voltage
PGOOD High Output Leakage
V PGOOD = 5.5V
q
q
q
–8
– 4.5
–2
0.4
1
%
V
μ A
LTC1751/LTC1751-3.3/LTC1751-5
I SHDN
Shutdown Supply Current
V IN ≤ 3.6V, V OUT = 0V, V SHDN = 0V
3.6V < V IN , V OUT = 0V, V SHDN = 0V
q
q
0.01
2
5
μ A
μ A
V IH
V IL
SHDN Input Threshold (High)
SHDN Input Threshold (Low)
q
q
1.5
0.3
V
V
I IH
I IL
t r
f OSC
SHDN Input Current (High)
SHDN Input Current (Low)
V OUT Rise Time
Switching Frequency
SHDN = V IN
SHDN = 0V
V IN = 3V, I OUT = 0mA, 10% to 90% (Note 6)
Oscillator Free Running
q
q
–1
–1
0.6ms/nF ? C SS
800
1
1
μ A
μ A
sec
kHz
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: Based on long term current density limitations.
Note 3: The LTC1751EMS8-X is guaranteed to meet performance
Note 4: The no load input current will be approximately I CC plus twice the
standing current in the resistive output divider.
Note 5: R OUT ≡ (2V IN – V OUT )/I OUT .
Note 6: See Figure 2.
specifications from 0 ° C to 70 ° C. Specifications over the – 40 ° C to 85 ° C
operating temperature range are assured by design, characterization and
correlation with statistical process controls.
TYPICAL PERFOR A CE CHARACTERISTICS
(LTC1751-3.3)
No Load Supply Current
Output Voltage vs Load Current
Output Voltage vs Input Voltage
vs Input Voltage
3.40
3.35
3.30
T A = 25 ° C
C FLY = 1 μ F
V IN = 2.5V
3.40
3.35
3.30
I OUT = 40mA
C FLY = 1 μ F
C OUT = 10 μ F
T A = –40 ° C
T A = 25 ° C
T A = 85 ° C
40
30
20
I OUT = 0mA
C FLY = 1 μ F
V SHDN = V IN
T A = 85 ° C
T A = 25 ° C
V IN = 2V
T A = –40 ° C
3.25
3.25
10
3.20
0
25
50 75 100
125
150
3.20
2.0
2.5
3.0
3.5
4.0
4.5
0
2.0
2.5
3.0
3.5
4.0
4.5
LOAD CURRENT (mA)
1751 G01
INPUT VOLTAGE (V)
1751 G02
INPUT VOLTAGE (V)
1751 G03
3
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