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PDF NCP705 Data sheet ( Hoja de datos )
| Número de pieza | NCP705 | |
| Descripción | LDO Voltage Regulator | |
| Fabricantes | ON Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de NCP705 (archivo pdf) en la parte inferior de esta página. Total 20 Páginas | ||
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NCP705
500 mA, Ultra-Low
Quiescent Current, IQ 13 mA,
Ultra-Low Noise, LDO
Voltage Regulator
Noise sensitive RF applications such as Power Amplifiers in
satellite radios, infotainment equipment, and precision
instrumentation require very clean power supplies. The NCP705 is
500 mA LDO that provides the engineer with a very stable, accurate
voltage with ultra low noise and very high Power Supply Rejection
Ratio (PSRR) suitable for RF applications. The device doesn’t require
any additional noise bypass capacitor to achieve ultra−low noise
performance. In order to optimize performance for battery operated
portable applications, the NCP705 employs dynamic Iq management
for ultra−low quiescent current consumption at light−load conditions
and great dynamic performance.
Features
• Operating Input Voltage Range: 2.5 V to 5.5 V
• Available in Fixed Voltage Options: 0.8 to 3.5 V
Contact Factory for Other Voltage Options
• Ultra−Low Quiescent Current of Typ. 13 mA
• Ultra−Low Noise: 12 mVRMS from 100 Hz to 100 kHz
• Very Low Dropout: 230 mV Typical at 500 mA
• ±2% Accuracy Over Load/Line/Temperature
• High PSRR: 71 dB at 1 kHz
• Internal Soft−Start to Limit the Turn−On Inrush Current
• Thermal Shutdown and Current Limit Protections
• Stable with a 1 mF Ceramic Output Capacitor
• Active Output Discharge for Fast Turn−Off
• These are Pb−Free Devices
Typical Applicaitons
• PDAs, Mobile Phones, GPS, Smartphones
• Wireless Handsets, Wireless LAN, Bluetooth, Zigbee
• Portable Medical Equipment
• Other Battery Powered Applications
VIN
IN OUT
VOUT
CIN 1 mF
NCP705
EN
ON GND
COUT
1 mF
Ceramic
OFF
Figure 1. Typical Application Schematic
http://onsemi.com
WDFN6
CASE 511BR
MARKING
DIAGRAMS
1
XX M
XX = Specific Device Code
M = Date Code
SOT223−6
CASE 419AY
AYW
XXXXXG
G
1
A = Assembly Location
Y = Year
W = Work Week
XXXXX = Specific Device Code
G = Pb−Free Package
(*Note: Microdot may be in either location)
PIN CONNECTIONS
16
2 EXP
5
34
WDFN6 2x2 mm
(Top View)
6
12345
SOT223−6
(Top View)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 18 of this data sheet.
© Semiconductor Components Industries, LLC, 2013
May, 2013 − Rev. 2
1
Publication Order Number:
NCP705/D
Free Datasheet http://www.datasheet4u.com/
1 page  
NCP705
TYPICAL CHARACTERISTICS
10
1
0.1
0.01
VIN = 3.8 V
VOUT = 3.3 V
CIN = 1 mF
COUT = 10 mF
MLCC, X7R,
0.001 1206 size
0.01 0.1
IOUT = 300 mA
IOUT = 10 mA IOUT = 100 mA
IOUT = 500 mA
1 10 100 1000
IOUT
1 mA
100 mA
300 mA
500 mA
RMS Output Noise (mV)
10 Hz − 100 kHz 100 Hz − 100 kHz
17.35
14.07
17.43
14.29
16.55
13.33
16.48
13.20
FREQUENCY (kHz)
Figure 6. Output Voltage Noise Spectral Density for VOUT = 3.3 V, COUT = 10 mF
450
400
350 VOUT = 0.8 V
300
250 VOUT = 3.3 V
200 VOUT = 2.5 V
150
100
50
0
0
VIN = VOUT + 0.5 V
COUT = 1 mF
CIN = 1 mF
MLCC, X7R,
1206 size
50 100 150 200 250 300 350 400 450 500
IOUT, OUTPUT CURRENT (mA)
Figure 7. Ground Current vs. Output Current
300
250
200 TJ = 125°C
150 TJ = 25°C
100
50
0
0
TJ = −40°C
VIN = 3.8 V
VOUT = 3.3 V
COUT = 1 mF
CIN = 1 mF
MLCC, X7R,
1206 size
50 100 150 200 250 300 350 400 450 500
IOUT, OUTPUT CURRENT (mA)
Figure 9. Ground Current vs. Output Current
at Temperatures
160
140
120 VOUT = 3.3 V
100 VOUT = 2.5 V
80 VOUT = 0.8 V
60 VIN = VOUT + 0.5 V
40
COUT = 1 mF
CIN = 1 mF
20
MLCC, X7R,
1206 size
0 0 0.25 0.5 0.75 1
1.25 1.5 1.75 2
IOUT, OUTPUT CURRENT (mA)
Figure 8. Ground Current vs. Output Current
from 0 mA to 2 mA
160
140
120
100
80
60
40
20
0
0
0.25
TJ = 125°C
TJ = 25°C
TJ = −40°C
VIN = 3.8 V
VOUT = 3.3 V
COUT = 1 mF
CIN = 1 mF
MLCC, X7R,
1206 size
0.5 0.75 1 1.25 1.5 1.75 2
IOUT, OUTPUT CURRENT (mA)
Figure 10. Ground Current vs. Output Current
0 mA to 2 mA at Temperature
http://onsemi.com
5
5 Page 
NCP705
TYPICAL CHARACTERISTICS
VEN
IINRUSH
VOUT
VIN = 3.8 V
VOUT = 3.3 V
VEN = 1 V
COUT = 10 mF
CIN = 1 mF
IOUT = 500 mA
100 ms/div
Figure 41. Enable Turn−on Response,
COUT = 10 mF, IOUT = 10 mA
VEN
VOUT
tRISE = 1 ms
VIN = 2.5 V
VOUT = 0.8 V
VEN = 1 V
IOUT = 10 mA
COUT = 1 mF
COUT = 10 mF
5 ms/div
Figure 43. Line Transient Response − Rising
Edge, VOUT = 0.8 V, IOUT = 10 mA
VEN
VOUT
tRISE = 1 ms
COUT = 1 mF
COUT = 10 mF
VIN = 3.8 V
VOUT = 3.3 V
VEN = 1 V
IOUT = 10 mA
10 ms/div
Figure 45. Line Transient Response − Rising
Edge, VOUT = 3.3 V, IOUT = 10 mA
VEN
IINRUSH
VOUT
VIN = 3.8 V
VOUT = 3.3 V
VEN = 1 V
COUT = 10 mF
CIN = 1 mF
IOUT = 500 mA
100 ms/div
Figure 42. Enable Turn−on Response,
COUT = 10 mF, IOUT = 500 mA
VEN
tFALL = 1 ms
VIN = 2.5 V
VOUT = 0.8 V
VEN = 1 V
IOUT = 10 mA
VOUT
COUT = 10 mF
COUT = 1 mF
5 ms/div
Figure 44. Line Transient Response − Falling
Edge, VOUT = 0.8 V, IOUT = 10 mA
VEN
tFALL = 1 ms
VIN = 3.8 V
VOUT = 3.3 V
VEN = 1 V
IOUT = 10 mA
VOUT
COUT = 10 mF
COUT = 1 mF
10 ms/div
Figure 46. Line Transient Response − Falling
Edge, VOUT = 3.3 V, IOUT = 10 mA
http://onsemi.com
11
11 Page | ||
| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet NCP705.PDF ] | |
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