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PDF ME8204 Data sheet ( Hoja de datos )
| Número de pieza | ME8204 | |
| Descripción | Current Mode PWM Controller | |
| Fabricantes | Microne | |
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南京微盟 张先生 TEL：13713617882 QQ：1781083953
ME8204
Current Mode PWM Controller With Frequency Shuffling ME8204 Series
General Description
ME8204 is a highly integrated current mode PWM
control IC optimized for high performance, low
standby power (<100mW) and cost effective offline
flyback converter applications in 40W～60W range.
ME8204 offers complete protection coverage with
automatic self-recovery feature including
Cycle-by-Cycle current limiting (OCP), CS short
protection, over load protection (OLP), and VDD
under voltage lockout (UVLO) and latch feature
including over temperature protection (OTP), over
voltage (fixed or adjustable) protection(OVP).
Excellent EMI performance is achieved with
frequency shuffling technique together with soft
switching control at the totem pole gate drive output.
Tone energy at below 20KHz is minimized in the
design and audio noise is eliminated during operation.
Selection Guide
Features
●Power on Soft Start Reducing MOSFET VDS Stress
●Frequency shuffling for EMI
●Audio Noise Free Operation
●Extended Burst Mode Control For Improved
Efficiency and Minimum Standby Power Design
●Internal Synchronized Slope Compensation
●Fixed 65KHz Switching Frequency (8204, 8204B)
●Fixed 100KHz Switching Frequency (8204C)
●Good protection coverage with auto self-recovery
﹡ VDD Under Voltage Lockout with Hysteresis
(UVLO)
﹡ Over Temperature Protection (OTP) with latch
shut down(8204) or auto-recovery(8204B,8204C)
﹡Cycle-by-cycle over current threshold setting for
constant output power limiting over universal input
voltage range
﹡Overload Protection (OLP) with auto-recovery
﹡VDD Over voltage Protection(OVP) with latch shut
down(8204) or auto-recovery(8204B.8204C)
﹡Adjustable OVP through external Zener
﹡CS floating protection with auto-recovery
﹡CS short protection with auto-recovery
Typical Application
Offline AC/DC flyback converter for
* AC/DC adapter
* PDA power supplies
* Digital cameras and camcorder adapter
* VCR,SVR, STB, DVD&DVCD player SMPS
* Set-top box power
* Auxiliary power supply for PC and server
* Open-frame SMPS
V03
www.microne.com.cn
Page 1 of 12
1 page  
南京微盟 张先生 TEL：13713617882 QQ：1781083953
ME8204
Electrical Characteristics(TA = 25°C,VDD=16V, if not otherwise noted)
Symbol
Parameter
Test Conditions
Min Typ. Max
Supply Voltage (VDD)
I Startup
VDD Start up Current
VDD=11V,Measure
leakage current into VDD
-
2 20
8204
- 1.8 3
IVDD_ Operation Operation Current
VFB=3V
8204B
8204C
1.8 3
3.3 4.5
UVLOON
UVLOOFF
VPULL-UP
VDD_ Clamp
VDD Under Voltage Lockout Enter
VDD Under Voltage Lockout Exit
(Recovery)
Pull-up PMOS active
IVDD = 10 mA
8 9 10
13 14 15.5
- 13 -
30 32 34
OVPON
VLATCH_REASE
AVCS
Maximum
duty cycle
VFB_ Open
I FB_ Short
VREF_GREEN
VREF_BURST_H
VREF_BURST_L
VTH_PL
TD_PL
ZFB_IN
CS=0V,FB=3V Ramp up
VDD Over voltage protection enter
VDD until gate clock is off
Latch release voltage
Feedback Input Section(FB Pin)
PWM Input Gain ΔVFB /ΔVCS
Max duty cycle
VDD=16V,VFB=3V, VCS=0V
VFB Open Loop Voltage
FB pin short circuit current
Short FB pin to GND,
measure current
The threshold enter green mode
The threshold exit burst mode
The threshold enter burst mode
Power Limiting FB Threshold
Voltage
Power limiting Debounce Time
Input Impedance
Current Sense Input(Sense Pin)
24
-
-
75
3.9
-
-
-
-
-
80
-
26
5
2
80
4.2
0.3
1.4
0.675
0.575
3.7
88
4
28
-
-
85
-
-
-
-
-
-
96
-
Soft start
time
T_ blanking
Leading edge blanking time
-4-
- 220 -
ZSENSE_IN Input Impedance
- 40 -
From over current occurs
Over Current Detection and Control
TD_OC
Delay
till the gate drive output - 120 -
start to turn off
VTH_OC
Internal current limiting threshold
voltage
FB=3.3V
- 0.875 -
Unit
μA
mA
mA
mA
V
V
V
V
V
V
V/V
%
V
mA
V
V
V
V
mS
KΩ
mS
nS
KΩ
nS
V
V03
www.microne.com.cn
Page 5 of 12
5 Page 
南京微盟 张先生 TEL：13713617882 QQ：1781083953
Packaging Information
Package type:SOT23-6 Unit:mm(inch)
ME8204
DIM
A
A1
A2
B
C
D
E
E1
e
e1
L
a0
V03
Millimeters
Min Max
0.9 1.45
0 0.15
0.9 1.3
0.2 0.5
0.09 0.26
2.7 3.10
2.2 3.2
1.30 1.80
0.95REF
1.90REF
0.10
00
0.60
300
Min
0.0354
0
0.0354
0.0078
0.0035
0.1062
0.0866
0.0511
0.0039
00
Inches
Max
0.0570
0.0059
0.0511
0.0196
0.0102
0.1220
0.1181
0.0708
0.0374REF
0.0748REF
0.0236
300
www.microne.com.cn
Page 11 of 12
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet ME8204.PDF ] | |
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