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PDF LD39115SJXX Data sheet ( Hoja de datos )
| Número de pieza | LD39115SJXX | |
| Descripción | 500 mA low quiescent current low noise voltage regulatore | |
| Fabricantes | ST Microelectronics | |
| Logotipo |  |
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Features
■ Input voltage from 1.5 to 5.5 V
■ Ultra low dropout voltage (80 mV typ. at 100
mA load)
■ Very low quiescent current (20 µA typ. at no
load, 35 µA typ. at 150 mA load, 1 µA max in off
mode)
■ Very low noise (33 µVRMS from 1 kHz to 100
kHz at VOUT = 1.8 V)
■ Output voltage tolerance: ± 2.0% @ 25 °C
■ 150 mA guaranteed output current
■ Wide range of output voltages available on
request: 0.8 V to 4.5 V with 100 mV step
■ Logic-controlled electronic shutdown
■ Compatible with ceramic capacitor
COUT = 1 µF
■ Internal current and thermal limit
■ Flip-chip 4 bumps 0.8 x 0.8 mm. pitch
■ Temperature range: -40 °C to 125 °C
Applications
■ Mobile phones
■ Personal digital assistants (PDAs)
■ Cordless phones and similar battery-powered
systems
LD39115Jxx
LD39115SJxx
150 mA low quiescent current
low noise voltage regulator
Flip-chip 4
Description
The LD39115Jxx provides 150 mA maximum
current from an input voltage ranging from 1.5 V
to 5.5 V with a typical dropout voltage of 80 mV. It
is stablized with a ceramic capacitor. The ultra low
drop voltage, low quiescent current and low noise
features make it suitable for low power battery-
powered applications. Power supply rejection is
65 dB at low frequencies and starts to roll off at 10
kHz. An enable logic control function puts the
LD39115Jxx in shutdown mode allowing a total
current consumption lower than 1 µA. The device
also includes a short-circuit constant current
limiting and thermal protection.
Table 1. Device summary
Part numbers
LD39115JXX12
LD39115SJXX12
LD39115JXX13
LD39115JXX28
LD39115JXX33
March 2009
Order codes
LD39115J12R
LD39115SJ12R
LD39115J13R
LD39115J28R
LD39115J33R
Rev 1
Output voltages
1.2 V
1.2 V
1.5 V
2.8 V
3.3 V
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23
1 page  
LD39115Jxx, LD39115SJxx
3 Typical application
Typical application
Figure 3. Typical application circuit
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VIN
1 µF
IN OUT
VOUT
1 µF
Load
VEN EN GND
5/23
5 Page 
LD39115Jxx, LD39115SJxx
Typical performance characteristics
6 Typical performance characteristics
(CIN = COUT = 1 µF, VEN to VIN)
Figure 4. Output voltage vs. temperature
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Figure 5. Output voltage vs. temperature
1.3
1.28
VIN = 2.2 V, IOUT = 1 mA
1.26
1.24
1.22
1.2
1.18
1.16
1.14
1.12
VOUT = 1.2 V
1.1
-75 -50 -25 0 25 50 75 100 125 150 175
T [°C]
3
2.95
VIN = 3.8 V, IOUT = 1 mA
2.9
2.85
2.8
2.75
2.7
2.65
VOUT = 2.8 V
2.6
-75 -50 -25 0 25 50 75 100 125 150 175
T [°C]
Figure 6. Line regulation vs. temperature Figure 7. Load regulation vs. temperature
0.05
0.04
VIN = from 2.2 V to 5.5 V, IOUT = 1 mA
0.03
0.02
VOUT=1.2V
0.01
0
-75 -50 -25 0
25 50 75 100 125 150 175
T [°C]
0.004
0.0035
VIN = 2.2 V, IOUT = from 1 to 150 mA
0.003
0.0025
0.002
0.0015
0.001
0.0005
0
-75 -50 -25
0
VOUT=1.2 V
25 50 75 100 125 150 175
T [°C]
Figure 8. Short-circuit current vs. drop
voltage
Figure 9. Dropout voltage vs. temperature
0.45
0.4
0.35
0.3
0.25
0.2
0.15
0.1
0.05
0
0
CIN = 1 µF COUT = 1 µF(+ 10 µF electrolitycs)
125
85
55
25
0
-25
-40
123456
DROP [V]
0.09
0.08
IOUT = 0.1 A
0.07
0.06
0.05
0.04
0.03
0.02
0.01
0
-75 -50 -25
0
VOUT = 2.8 V
25 50 75 100 125 150 175
TEMPERATURE [°C]
11/23
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| Páginas | Total 23 Páginas | |
| PDF Descargar | [ Datasheet LD39115SJXX.PDF ] | |
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