AP3988 Просмотр технического описания (PDF) - Diodes Incorporated.
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AP3988 Datasheet PDF : 13 Pages
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A Product Line of
Diodes Incorporated
AP3988/89/90
Electrical Characteristics (@VCC=15V, TJ=+25°C, unless otherwise specified.)
Symbol
Parameters
Conditions
STARTUP AND UVLO SECTION
VTH_ST
Turn-on Voltage
–
VOPR(MIN)
Turn-off Voltage
–
STANDBY CURRENT SECTION
IST
Turn-on Current
ICC_OPR
Operating Current
VCC=VTH_ST-1V before
startup
Static current @ no load
OPERATING FREQUENCY SECTION (5% LOAD TO FULL LOAD)
fS(MAX)
Operating Frequency in Full Load
Condition
–
Δf/f
Frequency Dithering
5% to 100% of full load
range
OPERATING FREQUENCY SECTION (NO LOAD TO 5% OF IOUT(MAX))
fS(MIN)
Output Voltage Detection Frequency
–
CURRENT SENSE SECTION
VCS_H
Peak Current Sense Voltage in Heavy
Load
VCS_M
Peak Current Sense Voltage in Middle
Load
VCS_L
Peak Current Sense Voltage in Light
Load
VCS_EL
Peak Current Sense Voltage in Extra-
Light Load
ΔVCS/VCS
VCS Modulation for Frequency Dithering
tMOD
VCS Modulation Period
40% to 100% of full load
18% to 40% of full load
5% to 18% of full load
0% to 5% of full load
–
–
RLINE
Built-in Line Compensation Resistor
–
tLEB
Leading Edge Blanking
@ VCS_H and VCS_M
@ VCS_EL
CONSTANT VOLTAGE SECTION
VFB
Equivalent Feedback Voltage @ Light
Load
IFB
FB Pin Input Current
VCABLE/VOUT Cable Compensation Ratio
Closed loop test of VOUT
VFB=4V
(VFB@FULLLOAD-VFB)/VFB
CONSTANT CURRENT SECTION
tONS/tSW
Secondary Winding Conduction Duty
VFB=2V
POWER TRANSISTOR SECTION
VCE(SAT)
Collector-emitter Saturation Voltage
hFE
DC Current Gain
AP3988/89: IC=0.5A
AP3990: IC=1A
AP3988/89
AP3990
ICEO
Leakage Current
–
PROTECTION FUNCTION SECTION
VFB(OVP)
Over Voltage Protection
–
VFB(SCP)
Short Circuit Protection
VFB @ Hiccup
TOTP
Shutdown Temperature
–
THYS
Temperature Hysteresis
–
–
Driver Protection Voltage
–
AP3988/89/90
Document number: DS36722 Rev. 3 - 2
5 of 13
www.diodes.com
Min
13
5.2
0
550
–
4.5
1.8
874
581
390
216
–
14.4
260
410
155
3.94
3.36
5.65
–
–
14
17
–
–
1.4
+125
–
4
Typ
15
5.8
0.2
650
–
5
2
910
605
405
225
2.5
16
330
500
200
4.00
4.20
6.00
4/7
–
17
26
–
7.5
1.5
+160
+40
5
Max
Unit
17
V
6.4
V
0.6
μA
750
60
kHz
5.5
%
2.2
kHz
946
mV
630
mV
425
mV
234
mV
–
%
17.6
ms
400
Ω
575
ns
245
ns
4.06
V
5.04
μA
6.40
%
–
–
0.3
V
–
–
–
–
60
μA
–
V
1.6
V
–
°C
–
°C
6
V
March 2014
© Diodes Incorporated
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