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AX3164 PDF даташит

Спецификация AX3164 изготовлена ​​​​«AXElite» и имеет функцию, называемую «PWM Control 2A Step-Down Controller».

Детали детали

Номер произв AX3164
Описание PWM Control 2A Step-Down Controller
Производители AXElite
логотип AXElite логотип 

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AX3164 Даташит, Описание, Даташиты
AX3164
PWM Control 2A Step-Down Controller
GENERAL DESCRIPTION
AX3164 is a step-down switching PWM controller. These devise include a reference
voltage source, oscillation circuit, error amplifier. External P-channel MOSFET is need in
application circuit for switching driver.
AX3164 controller provides low-ripple power, high efficiency, and excellent transient
characteristics control. The AX3164 PWM control circuit is able to the duty ratio linearly
form 0 up to 100%. This controller is build out soft start function that prevents overshoot
and inrush current at startup. An over current protect function and short circuit protect
function are determined external VCC-SENSE resistor, and when OCP or SCP happens,
the operation frequency will be reduced. An external compensation is easily to system
stable; the low ESR output capacitor can be used.
With the addition of a P-channel Power MOSFET, a coil, capacitors, and a diode
connected externally, these ICs can function as step-down switching regulators. They serve
as ideal power supply units for portable devices when coupled with the SOP-8L package,
providing such outstanding features as low current consumption. Since this controller can
accommodate an input voltage up to 58V, it is also suitable for the operation via an AC
adapter.
FEATURES
- Input voltage10V to 58V
- Output voltage3.3V to 56V
- Duty ratio0% to 100% PWM control
- Soft-Start function
- Current limit, Short Circuit Protect (SCP) protection and thermal Shutdown protection
- External SW P-channel MOSFET.
- SOP-8L Pb-Free package.
1/10
Axelite Confidential Materials, do not copy or distribute without written consent.
Rev.1.0 Jun.20, 2014









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AX3164 Даташит, Описание, Даташиты
BLOCK DIAGRAM
AX3164
PIN ASSIGNMENT
The package of AX3164 is SOP-8L; the pin assignment is given by:
Name
Description
VSS
VGATE
VCC
SW
1
2
3
4
( Top View )
8 SS
7 COMP
6 FB
5 SENSE
VSS
VGATE
VCC
SW
FB
GND pin
Driver GATE clamping pin. The
pin must connect a 1uF capacitor
to VCC
IC power supply pin
Switch control pin. Connect to
external P-channel MOSFET
gate.
Feedback pin
SOP-8L
COMP Compensation pin
SS Soft-start pin
SENSE Current sense for current-limit.
2/10
Axelite Confidential Materials, do not copy or distribute without written consent.
Rev.1.0 Jun.20, 2014









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AX3164 Даташит, Описание, Даташиты
AX3164
ORDER/MARKING INFORMATION
Order Information
AX3164 X X
Package Type Packing
S: SOP-8L
Blank : Tube
A : Taping
Top Marking
Logo
AX 3 1 6 4
YYWWX
Part number
ID code:internal
WW: 01~52
Year: 10=2010
11=2011
:
:
19=2019
ABSOLUTE MAXIMUM RATINGS (at TA=25°C)
Characteristics
Symbol
VCC Pin Voltage
VCC
Feedback Pin Voltage
VFB
SS Pin Voltage
SS
COMP Pin Voltage
VCOMP
VGATE Pin Voltage
VGATE
SENSE Pin Voltage
Vsense
SW Pin Voltage
VSW
Power Dissipation
PD
Storage Temperature Range
TST
Operating Junction Temperature Range
TOJP
Operating Supply Voltage
VOP
Thermal Resistance from Junction to case
θJC
Thermal Resistance from Junction to ambient
θJA
Rating
VSS - 0.3 to VSS + 63
VSS - 0.3 to 6
VSS - 0.3 to 6
VSS - 0.3 to 6
VSS - 0.3 to VCC
VSS - 0.3 to VCC + 0.3
VSS - 0.3 to VCC + 0.3
Internally limited
-65 to +150
-40 to +125
10 to 58
15
40
Unit
V
V
V
V
V
V
V
mW
°C
°C
V
°C/W
°C/W
ELECTRICAL CHARACTERISTICS
(VCC = 24V, TA=25°C, unless otherwise specified)
Characteristics
Symbol
Conditions
Feedback Voltage
Quiescent Current
VFB IOUT=10mA
ICCQ
VFB=1.2V
force driver off
Feedback Bias Current
Shutdown Supply Current
Line Regulation
Load Regulation
Current Limit
IFB IOUT=0.1A
ISD VCOMP =0V
VOUT/VOUT
VCC =10V~58V,
IOUT=10mA
VOUT/VOUT IOUT = 0.2 to 2A
VCC-SENSE
Oscillator frequency
Short frequency
Efficiency
FOSC
FOSC1
FOSC2
EFFI
ICL
VFB < 0.3
VCC = 24V,
VOUT = 5V, IOUT = 2A
Min Typ Max Units
0.98 1.00 1.02 V
- 3 6 mA
- 0.1 0.5 uA
- 0.5 1 mA
- 0.3 0.6 %
- 0.3 0.6 %
- 70 - mV
200 250 300 KHz
- 110 - KHz
- 30 - KHz
- 90 - %
3/10
Axelite Confidential Materials, do not copy or distribute without written consent.
Rev.1.0 Jun.20, 2014










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