The Future of Analog Technology®
MP2312/MP8765
2.1A/6A, 24V, 500kHz, Synchronous Step-Down Converters
With Power-Good in 3x3mm QFN Package
Oct, 2013
MP2312 –2.1A, 24V, 500kHz Synchronous, StepDown Converter with PG and Output Discharge
Features
• Wide 5V to 24V Operating Input Range
• 2.1A Continuous Output Current
• Low RDS(ON) 38mΩ/15mΩ Internal Power MOSFETs
• Proprietary Switching Loss Reduction Technique
• 1% Reference Voltage In Room Temperature
• 7ms Internal Soft Start
• Output Discharge
• 500kHz Switching Frequency
• Hiccup OCP Protection and Thermal Shutdown
High light
• Auto Retry OVP Protection
load
efficiency
• Output Adjustable from 0.604V to 5.5V
• Available in 3x3mm QFN16 Package
>95%
peak
Efficiency
4.7
VIN
19V
Benefits
22μF
• 5V to 24V Operating Input -> Suitable for
5V/9V/12V/16V/19V Bus System
• Low RDS(ON) 38mΩ/15mΩ -> High efficiency, good thermal
• COT control method -> Fast Transient Response
• Hiccup OCP and Thermal Protection-> Full Protection
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220nF
BST
VIN
VOUT
5V/2.1 A
10 μH
SW
499k
EN
MP2312
FB
GND
VOUT
PG
2M
499
390pF 160k
22μF×2
20.5k
VCC AGND P GND
100k
1μF
The Future of Analog IC Technology®
MP8765 –6A, 24V, 500kHz Synchronous, StepDown Converter with PG and Output Discharge
Features
• Wide 5V to 24V Operating Input Range
• 6A Continuous Output Current
• PFM/PWM Mode Selectable
• Low RDS(ON) 38mΩ/15mΩ Internal Power MOSFETs
• Proprietary Switching Loss Reduction Technique
• 1% Reference Voltage In Room Temperature
• 7ms Internal Soft Start
• Output Discharge
• 500kHz Switching Frequency
• Hiccup OCP Protection and Thermal Shutdown
• Auto Retry OVP Protection
• Output Adjustable from 0.604V to 5.5V
• Available in 3x3mm QFN16 Package
>96%
peak
Efficiency
>85%
Efficiency
at 100mA
Benefits
• 5V to 24V Operating Input -> Suitable for
5V/9V/12V/16V/19V Bus System
• Low RDS(ON) 38mΩ/15mΩ -> High efficiency, good thermal
• COT control method -> Fast Transient Response
• Hiccup OCP and Thermal Protection-> Full Protection
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PFM/PWM
mode
selection
The Future of Analog IC Technology®
MP8765 is our newest, most cost effective 6A device
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The Future of Analog IC Technology®
Family Summary
Iout
Max
Iout
DC
Fs
(kz)
Iq
Rdson
(mohm)
Contro
l
Metho
d
SS
Time
Feature
Status
P/N
Package
Vin
Range
NB671AGQ
QFN16
(3x3)
5.0~24V
9A
6A
500
160uA
30/15
COT
7ms
Long ss time
Version of NB671
Released
MP2312GQ
QFN16
(3x3)
5.0~24V
2.37A
2.1A
500
220uA
38/15
COT
7ms
2.1A version of
NB671A
New
release
MP8765GQ
QFN16
(3x3)
5.0~24V
7.6A
6A
500
160uA
38/15
COT
7ms
With LL disabled
New
release
Notes:
MP2312 is a 2A device with very precise current limit.
MP8765 is previously called NB671B. This device has the option
to disable LL mode. It’s a newer and lower cost alternative to
MP8760.
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The Future of Analog IC Technology®
Target Applications
Femto base station
Printer
MP2312
MP8765
-
Notebook
Router/Modem
I/O Power
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Security cameras
Set-Top Box
TVs and Monitors
The Future of Analog IC Technology®
TV Application
Main System
DDR Power
&Termination
Clock
Back Panel
.
Connectors
PCMCIA
Power
Video
Switch
Display Power
LED Backlighting
Temperature
Sensor
.
.
RTC
LCD Display
LCD
Controller
Processor
USB
Interface
HDMI
Interface
Front Panel
Connectors
Processor
Power
EEPROM
MP2312/M
P8765
Plug
AC Line
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AC/DC
and PFC
System
Power
Low Noise
Analog
Power
Switch
Power Management
The Future of Analog IC Technology®
Very fast transient response
Test condition: Vin=19V, Vo=5V, Io=1.05A to 2.1A, slew rate is 2.5A/us.
Vo(AC)
2.5A/us
Iout
38mV PK to
PK
Fast transient response with COT control method
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The Future of Analog IC Technology®
Excellent Efficiency
MP2312
MP8765
19Vin/5Vout
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The Future of Analog IC Technology®
Sales Strategy
• The MP2312/8765 are MPS’ latest 24V products that
have high performance, w/ PG, low Rdson and low Iq.
• MP8765 is lower cost alternative to MP8760.
• Compared with MP2314/5, MP2312 has better thermal
performance and better efficiency. For lower cost
requirements, target MP2314/5.
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The Future of Analog IC Technology®