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PDF LDL212 Data sheet ( Hoja de datos )
| Número de pieza | LDL212 | |
| Descripción | low drop linear regulator IC | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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LDL212
High PSRR, low drop linear regulator IC
Datasheet - production data
Features
Input voltage from 2.5 V to 18 V
20 V AMR
Any fixed output voltages, from 1.2 V to 12 V
in 100 mV steps (from 1.2 V to 6.6 V in
50 mV steps) available on request
Adjustable version from 1.18 V to
VIN-VDROP(MAX)
Guaranteed output current 1.2 A
Typical dropout 350 [email protected] A
Undervoltage lockout
Enable function
Internal thermal, current and power limitation
High PSRR: 87 dB @ 120 Hz, 75 dB @
1 kHz
Operating temperature range: -40 °C to
125 °C
Packages SO-8 batwing plastic
micropackage, DFN6 (3x3) and DFN6 (2x2)
Applications
Consumer
Industrial
SMPS
Point-of-load
DC-DC post-regulation
Description
The LDL212 provides 1.2 A of maximum current
from an input voltage range from 2.5 V to 18 V,
with a typical dropout voltage of 350 mV @ 1.2 A.
The high power supply rejection ratio of 87 dB at
120 Hz, and more than 40 dB at 100 kHz, makes
the LDL212 suitable for direct regulation in SMPS
and secondary linear regulation in DC-DC
converters. The LDL212 goes to shutdown mode
due to the enable logic control function, reducing
the total current consumption. The device also
includes the current limit, SOA and thermal
protections.
September 2016
DocID028297 Rev 2
This is information on a product in full production.
1/28
www.st.com
1 page  
LDL212
Typical application
3 Typical application
Figure 4: Typical application circuit (adjustable version)
Figure 5: Typical application circuit (fixed version)
R1 and R2 are calculated according to the following formula: R1 = R2 x (VOUT/VADJ
- 1). The output voltage of the adjustable version can be set from 1.18 V to VIN-
VDROP(MAX), where VDROP(MAX) is the maximum dropout voltage, as defined in Table
4: "Electrical characteristics".
DocID028297 Rev 2
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LDL212
Figure 18: Quiescent current vs temperature
(VOUT = 5 V, IOUT = 600 mA, 1.2 A)
Typical performance characteristics
Figure 19: Quiescent current vs temperature
(VOUT = VADJ, IOUT = 0 mA)
Figure 20: Quiescent current vs temperature
(VOUT = VADJ, IOUT = 600 mA)
Figure 21: Quiescent current vs temperature
(VOUT = VADJ, IOUT = 1.2 A)
Figure 22: Off-state current vs temperature
(VOUT = 5 V)
Figure 23: Off-state current vs temperature
(VOUT = VADJ)
DocID028297 Rev 2
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11 Page | ||
| Páginas | Total 28 Páginas | |
| PDF Descargar | [ Datasheet LDL212.PDF ] | |
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