Pin configuration LD2979
4/15 DocID5721 Rev 15
2 Pin configuration
Figure 2. Pin connections (top view)
SOT23-5L
Table 2. Pin description
Symbol Name and function Pin number
V
I
Input voltage 1
GND Ground 2
INHIBIT Control switch ON/OFF
(1)
3
NC Not to be connected 4
V
O
Output voltage 5
1. Inhibit pin is not internally pulled-up then it must not be left floating. Connect to a positive voltage higher than 2 V to able the
device.
DocID5721 Rev 15 5/15
LD2979 Maximum ratings
15
3 Maximum ratings
Note: Absolute maximum ratings are those values beyond which damage to the device may occur.
Functional operation under these condition is not implied.
Table 3. Absolute maximum ratings
Symbol Parameter Value Unit
V
I
DC input voltage 16 V
V
INH
DC inhibit input voltage V
IN
V
I
O
Output current Internally limited
P
D
Power dissipation Internally limited
T
STG
Storage temperature range -40 to 150 °C
T
OP
Operating junction temperature range -25 to 125 °C
Electrical characteristics LD2979
6/15 DocID5721 Rev 15
4 Electrical characteristics
(Refer to the test circuits, Ta = 25 °C, V
IN
= V
O(NOM)
+ 1 V, I
O
= 1 mA, V
INH
= 2 V, C
O
= 1 µF,
unless otherwise specified).
Table 4. Electrical characteristics
Symbol Parameter Test conditions Min. Typ. Max. Unit
V
O
Output voltage
V
IN
= 4 V 2.940 3 3.060
V
I
O
= 1 to 50mA, T
a
= -25 to 125°C 2.880 3.120
V
O
Output voltage
V
IN
= 4.3 V 3.234 3.3 3.366
V
I
O
= 1 to 50mA, T
a
= -25 to 125°C 3.168 3.432
I
O
Output current limit 100 mA
ΔV
O
Line regulation
V
IN
= V
O(NOM)
+1V to 16V, I
O
= 1mA 0.028
%/V
IN
T
a
= -25 to 125°C 0.064
I
d
Quiescent current (On
Mode)
I
O
= 0 80 110
µA
I
O
= 0, T
a
= -25 to 125°C 170
I
O
= 50mA 500 700
I
O
= 50mA, T
a
= -25 to 125°C 1300
Quiescent current (Off
Mode)
V
INH
< 0.18 V 0
µA
V
INH
< 0.18 V, T
a
= -25 to 125°C 1
SVR Supply voltage rejection I
O
= 50mA, C
OUT
= 10μF, f = 120Hz 63 dB
V
d
Dropout voltage
I
O
= 0 6 12
mV
I
O
= 0, T
a
= -25 to 125°C 18
I
O
= 1mA 30 60
I
O
= 1mA, T
a
= -25 to 125°C 90
I
O
= 10mA 100 200
I
O
= 10mA, T
a
= -25 to 125°C 300
I
O
= 50mA 200 400
I
O
= 50mA, T
a
= -25 to 125°C 600
V
IL
Inhibit input logic low Device Off, T
a
= -25 to 125°C 0.18 V
V
IH
Inhibit input logic high Device On, T
a
= -25 to 125°C 2 V
I
I
Inhibit input current
V
INH
= 0 V 0 -1
µA
V
INH
= 5V, T
a
= -25 to 125°C 5 15
eN
Output noise voltage
(RMS)
BW= 300Hz to 50kHz, C
O
= 10µF 160 µV

LD2979Z33AP

Mfr. #:
Manufacturer:
STMicroelectronics
Description:
LDO Voltage Regulators 3.3V 0.05A Very Low
Lifecycle:
New from this manufacturer.
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