LX8817-2500CDF 查看數據表（PDF） - Microsemi Corporation
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LX8817-2500CDF Datasheet PDF : 4 Pages
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A MICROSEMI COMPANY
LX8817
Dual Channel 2.5A Low Dropout Regulator
PRELIMINARY
Unless otherwise specified, the following specifications apply over the operating ambient temperature 0°C ≤ TA ≤ 135°C except where
otherwise noted and the following test conditions: VCTRL = 5V, VPWR = 3.3V IOUT = 10mA, C1, 2, 3, 4 = 10µF (Tantalum), and TJ = TA using
low duty cycling methods.
Parameter
FIXED OUTPUT
Symbol
Test Conditions
LX8817-xx00
Min Typ Max
Units
Output Voltage
• LX8815-2500
Line Regulation
Load Regulation
Dropout Voltage (PWR)
Current Limit
Minimum Load Current
ADJUSTABLE OUTPUT
Reference Voltage
Line Regulation
Load Regulation
Dropout Voltage
Current Limit
Minimum Load Current
Adjust Pin Bias Current
ENTIRE REGULATOR
Under Voltage Lockout
Quiescent Current
Ripple Rejection
RMS Output Noise
Thermal Shutdown
V1
∆V1(VIN)
∆V1(I1)
VPWR-V1
I1 (MAX)
I1
I1 = 10mA, TJ = 25°C
5mA < I1 < 2.5A, 3.75V < VCTRL < 8V
3V < VPWR < 5.5V
3.3V<VCTRL<10V, 3.3V<VPWR<5V, I1 = 5mA
5mA < I1 < 2.5A, VCTRL=5V, VPWR=3.3V
I1 = 2.5A, ∆V1 = -2%
I1 = 2.0A, ∆V1 = -2%
I1 = 1.0A, ∆V1 = -2%
Note 1
2.475 2.500 2.550 V
2.425 2.500 2.570
1
5 mV
1
9 mV
0.500 0.630
0.375 0.530 V
0.225 0.350
2.55 3.0
A
0
15 mA
V2
∆V2(VIN)
∆V2(I2)
VPWR-V2
I2 (MAX)
I2
IADJ
I2 = 10mA, TJ = 25°C
5mA < I2 < 2.5A, 3.0V < VCTRL < 8V
2V < VPWR < 5.5V
3V<VCTRL<10V, 2V<VPWR<5.5V, I2 = 5mA
5mA < I2 < 2.5A, VCTRL=5V, VPWR=3.3V
I2 = 2.5A, ∆V2 = -2%
I2 = 2.0A, ∆V2 = -2%
I2 = 1.0A, ∆V2 = -2%
Note 1
1.225 1.250 1.275
V
1.213 1.250 1.288
0.05 3 mV
1
7 mV
0.500 0.63
0.375 0.53 V
0.225 0.35
2.55 3.0
A
1
25 mA
1
5
µA
VPWR Rising, 3.0V<VCTRL=10V, Both Outputs
High Impedance
VCTRL Rising, 3.0V<VPWR=10V, Both Outputs
2.5
V
High Impedance
2.5
IQ
I1=I2=10mA
1.8 10 mA
PSRR f=120Hz, TJ = 25°C
60
75
dB
10Hz < f < 10kHz
0.003
%VOUT
TJSD
160
°C
Note 1: Minimum load current is defined as the amount of output current required to maintain regulation. Typically this current provides the bias to the
external resistor divider network used to set the output voltage.
Copyright © 2000
Rev. 0.2a, 2000-09-15
Microsemi
Linfinity Microelectronics Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 3
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