EM8633L PDF даташит
Спецификация EM8633L изготовлена «Excelliance MOS» и имеет функцию, называемую «PWM Controller». |
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Детали детали
Номер произв | EM8633L |
Описание | PWM Controller |
Производители | Excelliance MOS |
логотип |
12 Pages
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EM8633L
Green mode PWM Flyback Controller with External Over
Temperature Protection
General Description
EM8633L is a high performance, low startup
current, low cost, current mode PWM controller
with green mode power saving. The EM8633L
integrates functions of Soft Start(SS), Under Voltage
Lockout(UVLO), Leading Edge Blanking(LEB),
internal and external Over Temperature
Protection(OTP), internal slope compensation. The
EM8633L also features more protection like Over
Load Protection(OLP) and Over Voltage
Protection(OVP) to prevent circuit damage
occurred under abnormal conditions.
The EM8633L provides the users a superior
AC/DC power application of high efficiency,
excellent EMI performance, low external
component counts and lower cost solution.
Ordering Information
Part Number
EM8633L J
Package
SOT-23-6
Remark
Typical Application Circuit
Features
Ultra Low Start Up Current (6uA)
Current Mode Control
Soft Start Function
Built-in Slope Compensation
Internal Leading-edge Blanking
Over Voltage Protection (OVP) on VDD pin
Over Load Protection (OLP)
Cycle-by-cycle Current Limit
Feedback Open Protection
External Over Temperature Protection (OTP)
Internal Over Temperature Protection (OTP)
Constant Output Power Limit (Full AC Input
Range)
Internal Frequency Jittering for Excellent
EMI Performance
Gate Voltage Clamping
Applications
Switching AC/DC Adaptor and Charger
Open-Frame SMP
AC
INPUT
EMI
Filter
DC
+ OUTPUT
VDD
LATCH
GATE
EM8633L
COMP
CS
GND
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Protection Mode
VDD OVP
OLP
Latch
Auto-Recovery
Pin Configuration
GATE VDD CS
6 54
Latch Pin
Latch
EM8633L
12 3
GND COMP LATCH
SOT-23-6
TOP VIEW
Pin Assignment
Pin Name
GND
COMP
Pin Number
SOT-23-6
1
2
LATCH
CS
VDD
GATE
3
4
5
6
Pin Function
Ground.
Voltage feedback pin. By connecting a photo-coupler to close the control loop and
achieve the regulation.
This pin provides an internal sourcing current of 100uA, used for external latch
circuit. When this pin < 1.1V and after 160uS, IC is latch off. By connecting a NTC
resistor to GND, it can achieve the OTP protection function. Keep this pin floating
to disable the latch protection.
Senses the primary current.
IC Power Supply Pin.
Gate drive output to drive the external MOSFET.
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Function Block Diagram
LATCH
COMP
Vbias
100uA
1.1V
Vbias
LATCH
OLP
OTP
Shutdown
Logic
Green
mode
2R R
Oscillator
Max duty
CS LEB
Slope
Comp
-
+
PWM
comparator
Soft start
OCP
-
+
+
OCP
comparator
EM8633L
VDD
OVP
28V
UVLO
15V /8.5V
SQ
R
Soft
Driver
GATE
GND
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Номер в каталоге | Описание | Производители |
EM8633 | PWM Controller | Excelliance MOS |
EM8633L | PWM Controller | Excelliance MOS |
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DataSheet26.com | 2020 | Контакты | Поиск |