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PDF NCP81232MNTXG Data sheet ( Hoja de datos )
| Número de pieza | NCP81232MNTXG | |
| Descripción | Dual-Channel/Multi-Phase Controller | |
| Fabricantes | ON Semiconductor | |
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NCP81232
Dual-Channel/Multi-Phase
Controller for DrMOS
The NCP81232, a dual−channel/multi−phase synchronous buck
controller, provides power management solutions for various
applications supported by DrMOS. It has 8 programmable
power−stage configurations, differential voltage and current sense,
flexible power sequence programming, and comprehensive
protections.
Features
• Vin = 4.5~20 V with Input Feedforward
• Integrated 5.35 V LDO
• Vout = 0.6 V ~ 5.3 V
• Fsw = 200k ~ 1.2 MHz
• PWM Output Compatible to 3.3 V and 5 V DrMOS
• Flexible 8 Combinations of Power Stage Configurations (1~2 Output
Rails, 1~4 Phases)
• DDR Power Mode Option
• Interleaved Operation
• Differential Output Voltage Sense
• Differential Current Sense Compatible for both Inductor DCR Sense
and DrMOS Iout
• 2 Enables with Programmable Input UVLO
• Programmable DrMOS Power Ready Detection (DRVON)
• 2 Power Good Indicators
• Comprehensive Fault Indicator
• Externally Programmable Soft Start and Delay Time
• Programmable Hiccup Over Current Protection
• Hiccup Under Voltage Protection
• Recoverable Over Voltage Protection
• Hiccup Over Temperature Protection
• Thermal Shutdown Protection
• QFN−40, 5x5 mm, 0.4 mm Pitch Package
• This is a Pb−Free Device
Typical Applications
• Telecom Applications
• Server and Storage System
• Multiple Rail Systems
• DDR Applications
www.onsemi.com
MARKING
DIAGRAM
1 40
QFN40
CASE 485CR
1
TBD
YYWWAG
A = Assembly Location
YY = Year
WW = Work Week
G = Pb−Free Package
ORDERING INFORMATION
Device
Package
Shipping†
NCP81232MNTXG QFN40
(Pb−Free)
2500 /
Tape & Reel
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specification
Brochure, BRD8011/D.
© Semiconductor Components Industries, LLC, 2015
June, 2015 − Rev. 0
1
Publication Order Number:
NCP81232/D
1 page  
NCP81232
VIN
VCC5V
VREF
EN1
PGOOD1
EN1
PGOOD1
VIN
PWM1
PWM2
ISP1
ISN1
ISP1
ISN1
DIFFOUT1
FB1
COMP1
VSP1
VSN1
VSP1
VSN1
DLY1
SS
CNFG
FSET
NCP81232
ISP2
ISN2
ISP2
ISN2
PWM3
PWM4
ISP3
ISN3
ISP3
ISN3
PWM
VIN
VSWH
NCP5369
CGND
PGND
PWM
VIN
VSWH
NCP5369
CGND
PGND
PWM
VIN
VSWH
NCP5369
CGND
PGND
ISP1
ISN1
ISP2
ISN2
ISP3
ISN3
Vout1
VIN
VSN1
VSP1
VIN
VIN
GND
ISP4
ISN4
ISP4
ISN4
PWM
VIN
VSWH
NCP5369
CGND
PGND
ISP4
ISN4
Figure 3. Typical Application Circuit for Single Channel Applications (4 Phase)
www.onsemi.com
5
5 Page 
NCP81232
ELECTRICAL CHARACTERISTICS (VIN = 12 V, typical values are referenced to TA = 25°C, Min and Max values are referenced to
TA from −40°C to 125°C. unless other noted.)
Characteristics
Test Conditions
Symbol Min Typ Max Unit
DIFFERENTIAL CURRENT−SENSE AMPLIFIER
DC Gain
−3dB Gain Bandwidth
Input Common Mode Voltage Range
Differential Input Voltage Range
(Note 7)
(Note 7)
(Note 7)
GAINCA
BWCA
−0.2
−60
6 V/V
10 MHz
VCC+0.1
V
− 60 mV
Input Bias Current
SWITCHING FREQUENCY
ISP,ISN = 2.5 V
ICS −100
100 nA
Switching Frequency
Rfs = 2.7k
Rfs = 5.1k
Float
Rfs = 8.2k
Short to GND
Rfs = 13k
Rfs = 20k
Rfs = 33k
FSW 180 200 220 kHz
270 300 330
360 400 440
450 500 550
540 600 660
720 800 880
900 1000 1100
1080 1200 1320
Source Current
SYSTEM RESET TIME
IFS 45 50 55 mA
System Reset Time
DELAY TIME
Measured from EN to start of soft start
with TDL = 0 ms
TRST
1.8 2.0 2.2 ms
Delay Time
Float
Rdl = 33k
Rdl = 20k
Rdl = 13k
Rdl = 8.2k
Rdl = 5.1k
Rdl = 2.7k
Short to GND
(DLY1 Only)
Short to GND (DDR
Mode, DLY2 Only)
(Note 7)
TDL
− 0 − ms
0.9 1.0 1.1
1.8 2.0 2.2
2.7 3.0 3.3
3.6 4.0 4.4
7.2 8.0 8.8
10.8 12 13.2
18 20 22
− TDL1 −
Source Current
SOFT START TIME
IDL 45 50 55 mA
Soft Start Time
OTP Configuration 1
(Note 7)
Rss = 13k
Float
Rss = 20k
Rss = 33k
TSS 0.9 1.0 1.1 ms
2.7 3.0 3.3
3.6 4.0 4.4
5.4 6.0 6.6
OTP Configuration 2
(Note 7)
Rss = 2.7k
Short to GND
Rss = 5.1k
Rss = 8.2k
0.9 1.0 1.1
2.7 3.0 3.3
3.6 4.0 4.4
5.4 6.0 6.6
Source Current
ISS 45 50 55 mA
Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product
performance may not be indicated by the Electrical Characteristics if operated under different conditions.
7. Guaranteed by design, not tested in production.
www.onsemi.com
11
11 Page | ||
| Páginas | Total 24 Páginas | |
| PDF Descargar | [ Datasheet NCP81232MNTXG.PDF ] | |
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