LP3961_15 Datasheet, PDF (5/31 Pages) Texas Instruments – LP396x 800-mA Fast Ultra-Low-Dropout Linear Regulators

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LP3961, LP3964
SNVS056J – MAY 2000 – REVISED JUNE 2015
6.5 Electrical Characteristics
Unless otherwise specified: T_J = 25°C, V_IN = V_O(NOM) + 1 V, I_L = 10 mA, C_OUT = 33 µF, V_SD = V_IN – 0.3 V.
PARAMETER
TEST CONDITIONS
MIN ⁽¹⁾
TYP ⁽²⁾
V_O
Output voltage tolerance⁽³⁾
10 mA ≤ I_L ≤ 800 mA,
V_OUT + 1 ≤ V_IN ≤ 7 V
–1.5%
0%
10 mA ≤ I_L ≤ 800 mA,
V_OUT + 1 ≤ V_IN ≤ 7 V,
–40°C ≤ T_J ≤ 125°C
–3%
V_ADJ
Adjust pin voltage (ADJ version)
10 mA ≤ I_L ≤ 800 mA,
V_OUT + 1.5 V ≤ V_IN ≤ 7 V
1.198
1.216
ΔV_OL
Output voltage line regulation⁽³⁾
10 mA ≤ I_L ≤ 800 mA,
V_OUT + 1.5 V ≤ V_IN ≤ 7 V,
–40°C ≤ T_J ≤ 125°C
V_OUT + 1 V < V_IN < 7 V
1.180
0.02%
ΔV_O /
ΔI_OUT
Output voltage load regulation⁽³⁾
V_IN – V_OUT Dropout voltage⁽⁴⁾
V_OUT + 1 V < V_IN < 7 V,
–40°C ≤ T_J ≤ 125°C
10 mA < I_L < 800 mA
10 mA < I_L < 800 mA,
–40°C ≤ T_J ≤ 125°C
I_L = 80 mA
0.06%
0.02%
0.08%
24
I_L = 80 mA, –40°C ≤ T_J ≤ 125°C
I_L = 800 mA
240
I_L = 800 mA, –40°C ≤ T_J ≤ 125°C
I_GND
Ground pin current in normal
I_L = 80 mA
3
operation mode
I_L = 80 mA, –40°C ≤ T_J ≤ 125°C
I_L = 800 mA
4
I_L = 800 mA, –40°C ≤ T_J ≤ 125°C
I_GND
I_O(PK)
Ground pin current in shutdown
mode ⁽⁵⁾
Peak output current
V_SD ≤ 0.2 V
V_SD ≤ 0.2 V, –40°C ≤ T_J ≤ 125°C
See ⁽⁶⁾
See⁽⁶⁾, –40°C ≤ T_J ≤ 125°C
15
1.2
1.5
1.1
SHORT-CIRCUIT PROTECTION
I_SC
Short-circuit current
2.8
OVERTEMPERATURE PROTECTION
Tsh(t)
Shutdown threshold
165
Tsh(h)
Thermal shutdown hysteresis
10
SHUTDOWN INPUT
V_SDT
Shutdown threshold
Output = High
Output = High, –40°C ≤ T_J ≤
125°C
Output = Low
V_IN
V_IN – 0.3
0
Output = Low, –40°C ≤ T_J ≤ 125°C
MAX ⁽¹⁾
1.5%
3%
1.234
1.253
30
35
300
350
9
10
14
15
25
75
0.2
UNIT
V
mV
mA
µA
A
A
°C
°C
V
(1) Limits are 100% production tested at 25°C. Limits over the operating temperature range are specified through correlation using
Statistical Quality Control (SQC) methods. The limits are used to calculate TI's Average Outgoing Quality Level (AOQL).
(2) Typical numbers are at 25°C and represent the most likely parametric norm.
(3) Output voltage line regulation is defined as the change in output voltage from the nominal value due to change in the input line voltage.
Output voltage load regulation is defined as the change in output voltage from the nominal value due to change in load current. The line
and load regulation specification contains only the typical number. However, the limits for line and load regulation are included in the
output voltage tolerance specification.
(4) Dropout voltage is defined as the minimum input-to-output differential voltage at which the output drops 2% below the nominal value.
Dropout voltage specification applies only to output voltages of 2.5 V and above. For output voltages below 2.5 V, the drop-out voltage
is nothing but the input-to-output differential voltage because the minimum input voltage is 2.5 V.
(5) This specification has been tested for –40°C ≤ T_J ≤ 85°C because the temperature rise of the device is negligible under shutdown
conditions.
(6) The maximum allowable power dissipation is a function of the maximum junction temperature, T_J(MAX), the junction-to-ambient thermal
resistance, R_θJA, and the ambient temperature, T_A. The maximum allowable power dissipation at any ambient temperature is calculated
using: P_(MAX) = (T_J(MAX) – T_A) / R_θJA.
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