NCP3521 PDF даташит
Спецификация NCP3521 изготовлена «ON Semiconductor» и имеет функцию, называемую «(NCP3520 / NCP3521) LDO Regulator Controller». |
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Детали детали
Номер произв | NCP3521 |
Описание | (NCP3520 / NCP3521) LDO Regulator Controller |
Производители | ON Semiconductor |
логотип |
10 Pages
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NCP3520/NCP3521
LDO Regulator Controller
The NCP3520 / NCP3521 parts are Low Drop Out (LDO) regulator
controllers for applications requiring high−currents and ultra low
dropout voltages. The use of an external NMOS driver allows the user
to adapt the device to a multitude of applications depending on system
requirements for current and dropout voltage.
Features
• Fixed Voltage Options
♦ NCP3520 (1.2 V)
♦ NCP3521 (1.5 V)
• Low Operating Current
• Low Standby Current (sleep mode < 1 mA)
• Non Rush Current on Startup
• Short Circuit Protection
• 1% Output Voltage Tolerance
• Drop−In Replacement for Rohm BD3520FVM and BD3521FVM
• Functionally Equivalent to the
Rohm BD3501FVM and BD3502FVM
• These are Pb−Free Devices
Typical Applications
• Computer based gaming consoles
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NCP3520
NCP3521
EN VD
NRCS
VD
10 mF
0.01 mF
5.0 A
1.0 mF
VCC
GND
G
VS
VFB
NTMS4107N
or equivalent
3.0 A
220 mF
VO
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MARKING
DIAGRAM
8
Micro8
XXXX
DM SUFFIX
AYW G
1
CASE 846A
STYLE 2
G
1
XXXX
A
Y
W
G
= 3520 for Fixed 1.2 V or
= 3521 for Fixed 1.5 V
= Assembly Location
= Year
= Work Week
= Pb−Free Package
(Note: Microdot may be in either location)
PIN CONNECTIONS
NRCS
GND
EN
VCC
18
27
36
45
Micro8
(Top View)
VD
G
VS
VFB
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 9 of this data sheet.
NOTE: For best performance VFB should
utilize a Kelvin connection at the load.
Figure 1. Application Diagram
© Semiconductor Components Industries, LLC, 2007
March, 2007 − Rev. 0
1
Publication Order Number:
NCP3520/D
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NCP3520/NCP3521
VCC
VCC_UVLO
VD_UVLO
EN
50ms
Timer
Voltage
Reference
+ 50ms
− Timer
−
+
+
−
VD
0.65V
Latch
Clear
Latch
Set
Output
Off
Latch
Thermal
Shutdown
++
−
G
1.2mA
VS
VREF
20mA
NRCS
Non Rush
Current on
Startup
(NRCS)
with 50 ms
Startup
Short
Detect
−
+
Short Circuit
Protection
+
− 35% of VOUT
Figure 2. Block Diagram
220mA
GND
VFB
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NCP3520/NCP3521
PACKAGE PIN DESCRIPTION Micro8
Pin #
Symbol
Description
1
NRCS
Non Rush current on Startup. Capacitor to ground controls output voltage slew rate and short circuit
delay time.
2
GND
Ground.
3 EN Enable input control.
4
VCC
Power Supply Voltage Input.
5 VFB Voltage Feedback pin into the error amplifier for maintaining the output voltage.
6 VS Source input. Provides pulldown capability (1.2 mA operating & 220 mA turnoff) for fast output voltage
response time.
7 G Gate Drive for the external NFET.
8 VD NFET Drain input for voltage sensing.
MAXIMUM RATINGS
Rating
Value
Unit
All Pins
−0.3 to 7
V
IG (DC)
IG (AC)
IVS (DC)
10 mA
10
300
Electrostatic Discharge, Human Body Model
1.5 kV
Electrostatic Discharge, Machine Model
100 V
Package Thermal Resistance
Micro8
238 °C/W
Operating Junction Temperature
−10 to 150
°C
Storage Temperature Range
−55 to 150
°C
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
ELECTRICAL CHARACTERISTICS (TJ = 25°C, VCC = 5 V, VD = 2.0 V, EN = 3 V, External FET = NTMS4107N (Note 3), unless
otherwise specified)
Characteristic
Conditions
Min Typ Max Unit
REGULATOR OUTPUT
Feedback Voltage (NCP3520)
IO (NTMS4107N) = 50 mA
4.5 V < VCC < 5.5 V, 0°C < TJ < 100°C
(Note 1)
1.188
1.176
1.200
1.200
1.212
1.224
V
V
Feedback Voltage (NCP3521)
IO (NTMS4107N) = 50 mA
4.5 V < VCC < 5.5V, 0°C < TJ < 100°C
(Note 1)
1.485
1.470
1.500
1.500
1.515
1.530
V
V
Supply Current
Sleep Mode
Run Mode
Short Circuit Latch Condition
EN = 0 V
EN = 3 V
EN = 3 V
− 0 10 mA
− 1.25 1.7 mA
− 0.5 1.7 mA
Line Regulation (NCP3520)
4.5 V < VCC < 5.5 V, IOUT = 0
4.5 V < VCC < 5.5 V, IOUT = 3 A (Note 1)
−
Line Regulation (NCP3521)
4.5 V < VCC < 5.5 V, IOUT = 0
4.5 V < VCC < 5.5 V, IOUT = 3 A (Note 1)
−
Load Regulation (Note 2)
IO = 0 A to 3 A
−
1. Guaranteed by Design
2. Load regulation may vary with the selection of an external FET other than the NTMS4107N.
3. See “External Components” section on Page 8.
1.2 6.0 mV
1.2 6.0 mV
1.5 7.5 mV
1.5 7.5 mV
0.50 10 mV
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Номер в каталоге | Описание | Производители |
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