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PDF NCP59749 Data sheet ( Hoja de datos )
| Número de pieza | NCP59749 | |
| Descripción | Dual-Rail Very Low-Dropout Linear Regulator | |
| Fabricantes | ON Semiconductor | |
| Logotipo |  |
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NCP59749
3.0 A, Dual-Rail Very
Low‐Dropout Linear
Regulator with
Programmable Soft‐Start
The NCP59749 is dual−rail very low dropout voltage regulator that
is capable of providing an output current in excess of 3.0 A with a
dropout voltage of 120 mV typ. at full load current. The devices are
stable with ceramic and any other type of output capacitor ≥ 2.2 mF.
This series contains adjustable output voltage version with output
voltage down to 0.8 V. Internal protection features consist of built−in
thermal shutdown and output current limiting protection.
User−programmable Soft−Start and Power Good pins are available.
The NCP59749 is available in QFN20 5x5 package.
Features
• Output Current in Excess of 3.0 A
• VIN Range: 0.8 V to 5.5 V
• VBIAS Range: 2.7 V to 5.5 V
• Output Voltage Range: 0.8 V to 3.6 V
• Dropout Voltage: 120 mV at 3 A
• Programmable Soft Start
• Open Drain Power Good Output
• Fast Transient Response
• Stable with Any Type of Output Capacitor ≥ 2.2 mF
• Current Limit and Thermal Shutdown Protection
• These are Pb−Free Devices
Applications
• Consumer and Industrial Equipment Point of Load Regulation
• FPGA, DSP and Logic Power Supplies
• Switching Power Supply Post Regulation
NCP59749
http://onsemi.com
QFN20
CASE 485DB
PIN CONNECTIONS
IN
IN
IN
PG
BIAS
54321
6 20
7 19
8 GND 18
9 17
10 16
11 12 13 14 15
OUT
OUT
OUT
NC
FB
QFN20, 5x5, 0.65P
MARKING DIAGRAM
1
XXXXXXXX
XXXXXXXX
AWLYYWWG
G
QFN20
XXXXX = Specific Device Code
A = Assembly Location
L/WL = Wafer Lot
Y/YY = Year
W/WW = Work Week
G = Pb-Free Package
(Note: Microdot may be in either location)
Figure 1. Typical Application Schematic
© Semiconductor Components Industries, LLC, 2014
March, 2014 − Rev. 0
1
ORDERING INFORMATION
See detailed ordering, marking and shipping information in the
package dimensions section on page 9 of this data sheet.
Publication Order Number:
NCP59749/D
1 page  
NCP59749
0.20
0.15
0.10
0.05
0
−0.05
−0.10
−0.15
−0.20
0
TYPICAL CHARACTERISTICS
At TJ = +25°C, VIN = VOUT(TYP) + 0.3 V, VBIAS = 5 V, IOUT = 50 mA, VEN = VIN,
CIN = 1 mF, CBIAS = 4.7 mF, and COUT = 10 mF, unless otherwise noted.
0.5
0.4
0.3
−40°C
+125°C
0.2
0.1 −40°C
+125°C
+25°C
0
−0.1 +25°C
−0.2
−0.3
−0.4
−0.5
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
0.5 1.0 1.5 2.0 2.5 3.0 3.5
VIN − VOUT (V)
Figure 3. VIN Line Regulation
VBIAS − VOUT (V)
Figure 4. VBIAS Line Regulation
4.0
0.5
0.4
0.3
0.2
0.1
0
−0.1
−0.2
−0.3
−0.4
−0.5
0
+125°C
+25°C
−40°C
10 20 30 40
IOUT, OUTPUT CURRENT (mA)
Figure 5. Load Regulation
0.5
0.4
0.3
0.2
0.1
0
−0.1
−0.2
−0.3
−0.4
−0.5
50 0
+125°C
+25°C
−40°C
0.5 1.0 1.5 2.0 2.5
IOUT, OUTPUT CURRENT (A)
Figure 6. Load Regulation
3.0
120
100 +125°C
80 +25°C
60
40 −40°C
20
0
0 0.5 1.0 1.5 2.0 2.5 3.0
IOUT, OUTPUT CURRENT (A)
Figure 7. VIN Dropout Voltage vs. IOUT and
Temperature TJ
500
450
400 IOUT = 3 A
350
300
250
200 +25°C
150 +125°C
100
50 −40°C
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
VBIAS − VOUT (V)
Figure 8. VIN Dropout Voltage vs. (VBIAS −
VOUT) and Temperature TJ
http://onsemi.com
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