LP2966IMMX-3325 Datasheet, PDF (4/21 Pages) Texas Instruments – Dual 150mA Ultra Low-Dropout Regulator

LP2966
SNVS028E – APRIL 2000 – REVISED APRIL 2013
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ELECTRICAL CHARACTERISTICS
Limits in standard typeface are for T_j = 25°C, and limits in boldface type apply over the full operating junction temperature
range. Unless otherwise specified, V_IN = V_O(NOM) + 1V⁽¹⁾, C_OUT = 1µF, I_OUT = 1mA, C_IN = 1µF, V_SD1 = V_SD2 = V_IN.
Symbol
Parameter
Conditions
Typ ⁽²⁾
LP2966IMM ⁽³⁾
Min
Max
Unit
V_o ⁽⁴⁾
Output Voltage
Tolerance
V_OUT + 1V < V_IN < 7.0V
0.0
−1
-3
1
3
%V_NOM
ΔV_O/ΔV_IN ^{(4) (5)}
ΔV_O/ΔI_OUT
ΔV_O2/ΔI_OUT1
V_IN -V_OUT
1mA < I_L < 100mA
Output Voltage Line
Regulation
Output Voltage Load
Regulation ⁽⁶⁾
Output Voltage Cross
Regulation ⁽⁷⁾
Dropout Voltage⁽⁸⁾
1mA < I_L< 100mA⁽⁶⁾
1mA < I_L1< 100mA⁽⁷⁾
I_L = 1mA
0.0
−1.5
-3.5
0.1
0.1
0.0004
0.9
1.5
3.5
%V_NOM
mV/V
mV/mA
mV/mA
2.0
3.0
I_L = 100mA
90
130
mV
180
I_L = 150mA
135
I_GND(1,0) ⁽⁹⁾
Ground Pin Current
I_L = 1mA
300
(One LDO On)
V_SD2 ≤ 0.1V, V_SD1= V_IN
I_L = 100mA
340
V_SD2 ≤ 0.1V, V_SD1= V_IN
I_GND(1,1)
Ground Pin Current
I_L = 1mA
340
(Both LDOs On)
I_L = 100mA
420
195
270
µA
450
500
µA
540
600
I_GND(0,0)
I_O(PK)
Ground Pin Current in
Shutdown Mode
Peak Output Current
V_SD1= V_SD2 ≤ 0.1V
See ⁽¹⁰⁾
V_OUT≥ V_OUT(NOM)- 5%
0.006
500
350
150
0.3
µA
10
mA
Short Circuit Foldback Protection
I_FB
Short Circuit Foldback See^(10)(11)
600
mA
Knee
(1) The condition V_IN = V_O(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 V_IN = V_O(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 ΔV_O1/ΔI_OUT2 is equal to the specification for ΔV_O2/ΔI_OUT1.
(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, I_GND(0,1) will be same as the limits for the specification, I_GND(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 θ_jA = 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.
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