EM8800A Datasheet PDF - Excelliance MOS
| Part Number | EM8800A | |
| Description | Current-Mode Controller | |
| Manufacturers | Excelliance MOS | |
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EM8800A
Constant Off Time, Current-Mode Controller for LED Applications
General Description
EM8800A is a constant off time current mode
controller. This device can operated with a fixed off
time of the power switch. The TOFF pin is provided
to set the off time. In addition, the PWMD pin
enables the user to use a PWM signal to modulate
the switching pattern and adjust the average
luminosity. The LD/SS pin enables the user to set
peak current by adjust the voltage of this pin.
This part includes internal soft start, maximum
on time protection, over current protection and
thermal shutdown function. This part is available in
SOP-8 package.
Ordering Information
Part Number Package
EM8800AG SOP-8
Remark
Features
Constant Off Time Current-Mode Control
Adjustable Off Time
Internal Leading Edge Blanking
Internal Start Up Delay
Maximum On Time Protection
Over Current Protection
Thermal Shutdown
Applications
LED Backlight or lighting
RGB Backlight or lighting
Organic Light-Emitting Diode Backlight or
lighting
AC-DC or DC-DC LED Driver applications.
Pin Configuration
Typical Application Circuit
VLED-in
FAULT
VCC
PWMD EM8800A GATE
CS
LD/SS
TOFF G D
2011/09/06
Rev.A.3
1
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EM8800A
TOFF section
Off Time
Minimum Off Time
Maximum Off Time
TOFF Short Protection Trigger Level
Off Time Variation vs. VCC
Off Time Variation vs. Temperature
R_TOFF=30K ohm
TOFF R_TOFF=10K ohm
TOFF-min R_TOFF=1K ohm
TOFF-max R_TOFF=60K ohm
VTOFF-SHORT
VCC=9.5V to 16V
-20°C to 105°C
PWMD Section
PWMD ON Voltage Threshold
PWMD OFF Voltage Threshold
PWMD Pin Open Voltage
PWMD Pin Internal Pull High Current
Dimming Wake-up Time
LD/SS Section
LD/SS Pin Open Voltage
LD/SS Pin Internal Pull High Current
LD/SS Pin Voltage to Peak Current Ratio
FAULT Section
FAULT Internal Pull Low Current
FAULT Pull high Voltage
FAULT Pull high Capability
VPWMD-ON VPWMD increasing
VPWMD-OFF VPWMD decreasing
VPWMD-OPE
N
IPWMD
TWAKE
VPWMD= VPWMD-ON to
VGATE=10V
VLD-OPEN
ILD
IFA
VFA_HIGH
IFA_HIGH
Protection Section
Maximum On Time
Over Current Trigger Level
Suspend mode Vcs over voltage protection
OCP Leading Edge Blanking Time
Start-up Delay
Thermal Shutdown
Thermal Shutdown Hysteresis
TON-MAX
VOCP1
VOCP2
TLEB-OCP
TSTART-DEL AY
TSD
TSD-HYS
6
1.8 2 2.2
0.435
12
0.3 0.4 0.5
2
5
us
us
us
us
V
%
%
2.2 V
0.8 V
5V
2 4 6 uA
1 us
5V
18 20 22 uA
2.85 3 3.15 V/V
6 10 uA
5V
12
mA
50 us
1.45 1.5 1.6 V
1.45 1.5 1.6 V
550 ns
80 130 160 ms
135 155
°C
40 °C
Note 1.
Note 2.
Note 3.
Note 4.
Stresses listed as the above “Absolute Maximum Ratings” may cause permanent damage to the device. These are for
stress ratings. Functional operation of the device at these or any other conditions beyond those indicated in the
operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended
periods may remain possibility to affect device reliability.
θJA SOP-8 packages is 52°C /W on JEDEC 51-7 (4 layers,2S2P) thermal test board with 50mm2 copper area.
Devices are ESD sensitive. Handling precaution is recommended.
The device is not guaranteed to function outside its operating conditions.
2011/09/06
Rev.A.3
5
Preview 5 Page |
Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for EM8800A electronic component. |
| Information | Total 8 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ EM8800A.PDF Datasheet ] | |
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