APW7165C Datasheet PDF - Anpec Electronics Coropration


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APW7165C
Anpec Electronics Coropration

Part Number APW7165C
Description 5V to 12V Synchronous Buck Controller
Page 20 Pages

APW7165C datasheet pdf
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APW7165C
5V to 12V Synchronous Buck Controller
Features
General Description
Wide Operation Supply Voltage from 5V to 12V
Power-On-Reset Monitoring on VCC
Excellent Reference Voltage Regulations
- 0.6V Internal Reference
- ±1% Over Temperature Range
Integrated Soft-Start
Automatic PSM/PWM Modes
Voltage Mode PWM Operation with 90% (Max.)
Duty Cycle
Under-Voltage Protection
Adjustable Over-Current Protection Threshold
- Sensing the RDS(ON) of Low-Side MOSFET
Over-Voltage Protection
Under-Voltage Protection
Simple SOP-8P Package
Lead Free and Green Devices Available
(RoHS Compliant)
Applications
Graphic Cards
DSL, Switch HUB
Wireless Lan
Notebook Computer
Mother Board
LCD Monitor/TV
Pin Configuration
The APW7165Cis a voltage mode, fixed 300kHz-switch-
ing frequency, and synchronous buck controller. The
APW7165C allows wide input voltage that is either a
single 5~12V or two supply voltage(s) for various
applications. A power-on-reset (POR) circuit monitors the
VCC supply voltage to prevent wrong logic controls. A built-
in digital soft-start circuit prevents the output voltages from
overshoot as well as limits the input current. An internal
0.6V temperature-compensated reference voltage with
high accuracy is designed to meet the requirement of
low output voltage applications. The APW7165C provides
excellent output voltage regulations against load current
variation.
The controller’s over-current protection monitors the out-
put current by using the voltage drops across the R
DS(ON)
of low-side MOSFET, eliminating the need for a current
sensing resistor that features high efficiency and low cost.
The APW7165C also integrates over-voltage protection
(OVP) and under-voltage protection circuit which moni-
tors the FB voltage to prevent the PWM output from over
and under voltage.
The APW7165C is available in a simple SOP-8P package.
Simplified Application Circuit
OFF
ON
VVCC
APW7165C
5 VCC BOOT 1
7
UGATE 2
COMP
PHASE 8
LGATE 4
6 FB GND
3
VIN
VOUT
BOOT 1
UGATE 2
GND 3
LGATE 4
9
GND
8 PHASE
7 COMP
6 FB
5 VCC
SOP-8P
(Top View)
ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and
advise customers to obtain the latest version of relevant information to verify before placing orders.
Copyright © ANPEC Electronics Corp.
Rev. A.2 - Oct., 2012
1
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APW7165C
Ordering and Marking Information
Assembly Material
Assembly Material
G : Halogen and Lead Free Device
Note: ANPEC lead-free products contain molding compounds/die attach materials and 100% matte tin plate termination finish; which
are fully compliant with RoHS. ANPEC lead-free products meet or exceed the lead-free requirements of IPC/JEDEC J-STD-020D for
MSL classification at lead-free peak reflow temperature. ANPEC defines “Green” to mean lead-free (RoHS compliant) and halogen
free (Br or Cl does not exceed 900ppm by weight in homogeneous material and total of Br and Cl does not exceed 1500ppm by
weight).
Absolute Maximum Ratings (Note 1)
Symbol
Parameter
Rating
Unit
VVCC VCC Supply Voltage (VCC to GND)
-0.3 ~ 16
V
VBOOT BOOT to PHASE Voltage
-0.3 ~ 16
V
VUGATE UGATE to PHASE Voltage
> 400ns
< 400ns
-0.3 ~ VBOOT+0.3
-5 ~ VBOOT+5
V
V
VLGATE LGATE to GND Voltage
> 400ns
< 400ns
-0.3 ~ VVCC+0.3
-5 ~ VVCC+5
V
V
VPHASE PHASE to GND Voltage
> 200ns
< 200ns
-0.3 ~ 16
-10 ~ 30
V
V
FB and COMP to GND (< VVCC + 0.3V)
-0.3 ~ 7
V
TJ Maximum Junction Temperature
150 °C
TSTG
Storage Temperature
-65 ~ 150
°C
TSDR Maximum Lead Soldering Temperature, 10 Seconds
260 °C
Note1: Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are
stress ratings only and functional operation of the device at these or any other conditions beyond those indicated under "recom-
mended operating conditions" is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device
reliability
Thermal Characteristics
Symbol
θJA
Parameter
Thermal Resistance -Junction to Ambient (Note 2)
θJC Thermal Resistance -Junction to Case
SOP-8P
SOP-8P
Typical Value
80
20
Note 2 : θJA is measured with the component mounted on a high effective thermal conductivity test board in free air.
Unit
°C/W
°C/W
Copyright © ANPEC Electronics Corp.
Rev. A.2 - Oct., 2012
2
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APW7165C
Recommended Operating Conditions (Note 3)
Symbol
Parameter
VVCC VCC Supply Voltage (VCC to GND)
VOUT Converter Output Voltage
VIN Converter Input Voltage
IOUT Converter Output Current
TA Ambient Temperature
TJ Junction Temperature
Note 3: Refer to the application circuit for further information.
Range
4.5 ~ 13.2
0.9 ~ 5
2.9 ~ VVCC
0 ~ 20
-20 ~ 70
-20 ~ 125
Unit
V
V
V
A
°C
°C
Electrical Characteristics
Refer to the typical application circuit. These specifications apply over VVCC = 12V, TA = -20°C to 70°C, unless otherwise
noted. Typical values are at TA = 25°C.
Symbol
Parameter
Test Conditions
APW7165C
Min. Typ. Max.
Unit
INPUT SUPPLY VOLTAGE AND CURRENT
VCC Supply Current (Shutdown Mode)
IVCC
VCC Supply Current
UGATE and LGATE open;
COMP=GND
UGATE and LGATE open
- 46
mA
- 16 24
POWER-ON-RESET (POR)
Rising VCC POR Threshold
3.7 4.1 4.4
V
VCC POR Hysteresis
0.3 0.45 0.6
V
OSCILLATOR
FOSC
VOSC
Oscillator Frequency
Oscillator Sawtooth Amplitude (Note 4)
DMAX Maximum Duty Cycle
ERROR AMPLIFIER
270 300 330 kHz
- 1.5 -
V
85 - 90 %
VREF
Reference Voltage
Converter Load Regulation (Note 4)
gm Transconductance
FB Input Leakage Current
COMP High Voltage
COMP Low Voltage
Maximum COMP Source Current
Maximum COMP Sink Current
GATE DRIVERS
TA = -20 ~ 70°C
IOUT = 2 ~ 12A
VFB = 0.6V
RL = 10kto GND
RL = 10kto GND
VCOMP = 2V
VCOMP = 2V
0.594 0.6 0.606
V
- - 0.2 %
- 667 - µA/V
- 0.1 1 µA
- 2.5 -
-1-
V
- 200 -
- 200 -
µA
High-Side Gate Driver Source Current VBOOT= 12V, VUGATE-PHASE = 2V
High-Side Gate Driver Sink Impedance BOOT=12V, IUGATE = 0.1A
Low-Side Gate Driver Source Current VVCC = 12V, VLGATE = 2V
Low-Side Gate Driver Sink Impedance VVCC =12V, IUGATE = 0.1A
TD Dead-Time (Note 4)
- 1.8 -
- 2.3 -
- 1.8 -
- 1.3 -
- 30 -
A
A
ns
Copyright © ANPEC Electronics Corp.
Rev. A.2 - Oct., 2012
3
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APW7165C
Electrical Characteristics (Cont.)
Refer to the typical application circuit. These specifications apply over VVCC = 12V, TA = -20°C to 70°C, unless otherwise
noted. Typical values are at TA = 25°C.
Symbol
Parameter
Test Conditions
APW7165C
Min. Typ. Max.
Unit
PROTECTIONS
VFB_UV FB Under-Voltage Protection Trip Point Percentage of VREF
45 50 55 %
VFB_OV
FB Over-Voltage Protection Trip Point VFB rising
FB Over-Voltage Protection Hysteresis
115 120 125
-5-
%
%
VOCP_MAX Built-in Maximum OCP Voltage
300 -
- mV
IOCSET OCSET Current Source
19.5 21.5 23.5
µA
SOFT-START
VDISABLE
TSS
Shutdown Threshold of VCOMP
Internal Soft-Start Interval (Note 4)
- - 0.6 V
- 1.7 - ms
Note 4: Guaranteed by design, not production tested.
Copyright © ANPEC Electronics Corp.
Rev. A.2 - Oct., 2012
4
www.anpec.com.tw




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