LP2966
SNVS028E –APRIL 2000–REVISED APRIL 2013
www.ti.com
ELECTRICAL CHARACTERISTICS
Limits in standard typeface are for Tj = 25°C, and limits in boldface type apply over the full operating junction temperature
range. Unless otherwise specified, VIN = VO(NOM) + 1V(1), COUT = 1µF, IOUT = 1mA, CIN = 1µF, VSD1 = VSD2 = VIN.
LP2966IMM(3)
Symbol
Parameter
Conditions
Typ(2)
Unit
Min
−1
Max
1
(4)
Vo
Output Voltage
Tolerance
VOUT + 1V < VIN < 7.0V
0.0
%VNOM
-3
3
1mA < IL < 100mA
0.0
−1.5
-3.5
1.5
3.5
%VNOM
mV/V
(4)(5)
ΔVO/ΔVIN
Output Voltage Line
Regulation
0.1
0.1
ΔVO/ΔIOUT
ΔVO2/ΔIOUT1
VIN -VOUT
Output Voltage Load
Regulation(6)
1mA < IL< 100mA(6)
1mA < IL1< 100mA(7)
IL = 1mA
mV/mA
mV/mA
Output Voltage Cross
Regulation(7)
Dropout Voltage(8)
0.0004
0.9
2.0
3.0
IL = 100mA
IL = 150mA
IL = 1mA
90
135
300
340
340
420
0.006
500
130
180
195
270
mV
(9)
IGND(1,0)
Ground Pin Current
(One LDO On)
V
SD2 ≤ 0.1V, VSD1= VIN
IL = 100mA
SD2 ≤ 0.1V, VSD1= VIN
µA
µA
V
IGND(1,1)
Ground Pin Current
(Both LDOs On)
IL = 1mA
450
500
540
600
0.3
10
IL = 100mA
VSD1= VSD2 ≤ 0.1V
See(10)
IGND(0,0)
Ground Pin Current in
Shutdown Mode
µA
IO(PK)
Peak Output Current
350
150
mA
VOUT≥ VOUT(NOM)- 5%
Short Circuit Foldback Protection
IFB Short Circuit Foldback
Knee
See(10)(11)
600
mA
(1) The condition VIN = VO(NOM) + 1V applies when Vout1 = Vout2. If Vout1 ≠ Vout2, then this condition would apply to the output which is
greater in value. As an example, if Vout1 = 3.3V and Vout2 = 5V, then the condition VIN = VO(NOM)+ 1V would apply to Vout2 only.
(2) :Typical numbers are at 25°C and represent the most likely parametric norm.
(3) :Limits are 100% production tested at 25°C. Limits over the operating temperature range are ensured through correlation using
Statistical Quality Control (SQC) methods. The limits are used to calculate Averaging Outgoing Quality Level (AOQL).
(4) Output voltage tolerance specification also includes the line regulation and load regulation.
(5) Output voltage line regulation is defined as the change in output voltage from the nominal value due to change in input line voltage.
(6) Output voltage load regulation is defined as the change in output voltage from the nominal value when the load current changes from
1mA to 100mA.
(7) Output voltage cross regulation is defined as the percentage change in the output voltage from the nominal value at one output when
the load current changes from 1mA to full load in the other output. This is an important parameter in multiple output regulators. The
specification for ΔVO1/ΔIOUT2 is equal to the specification for ΔVO2/ΔIOUT1
.
(8) Dropout voltage is defined as the input to output differential at which the output voltage drops 100mV below the nominal value. Drop-out
voltage specification applies only to output voltages greater than 2.7V. For output voltages below 2.7V, the drop-out voltage is nothing
but the input to output differential, since the minimum input voltage is 2.7V.
(9) The limits for the ground pin current specification, IGND(0,1) will be same as the limits for the specification, IGND(1,0)
.
(10) At elevated temperatures, devices must be derated based on package thermal resistance. The device in the surface-mount package
must be derated at θjA = 235°C/W, junction-to-ambient. Please refer to APPLICATIONS INFORMATION: Maximum Current Capability
for further information. The device has internal thermal protection.
(11) LP2966 has fold back current limited short circuit protection. The knee is the current at which the output voltage drops 10% below the
nominal value.
4
Submit Documentation Feedback
Copyright © 2000–2013, Texas Instruments Incorporated
Product Folder Links: LP2966