ACT337 Просмотр технического описания (PDF) - Active-Semi, Inc
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ACT337 Datasheet PDF : 12 Pages
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ACT337
Rev 2, 14-Nov-12
ABSOLUTE MAXIMUM RATINGSc
PARAMETER
VDD, BD, SW to GND
Maximum Continuous VDD Current
FB, CS to GND
Continuous SW Current
Maximum Power Dissipation (derate 6.7mW/˚C above TA = 50˚C)(SOP-8)
Junction to Ambient Thermal Resistance (θJA)(SOP-8)
Operating Junction Temperature
Storage Junction
Lead Temperature (Soldering, 10 sec)
VALUE
-0.3 to + 28
100
-0.3 to + 6
Internally limited
0.67
150
-40 to 150
-55 to 150
300
UNIT
V
mA
V
A
W
˚C/W
˚C
˚C
˚C
c: Do not exceed these limits to prevent damage to the device. Exposure to absolute maximum rating conditions for long periods may
affect device reliability.
ELECTRICAL CHARACTERISTICS
(VDD = 12V, VOUT = 5V, LP = 1.25mH, NP = 110, NS = 8, NA = 18, TA = 25°C, unless otherwise specified.)
PARAMETER
Supply
VDD Turn-On Voltage
VDD Turn-Off Voltage
Supply Current
Start Up Supply Current
BD Current during Startup
Internal Soft Startup Time
Oscillator
Switching Frequency
Maximum Switching Frequency
Maximum Duty Cycle
Feedback
Effective FB Voltage
FB Leakage Current
Output Cable Resistance
Compensation
SYMBOL
TEST CONDITIONS
MIN TYP MAX UNIT
VDDON
VDDOFF
IDD
IDDST
IBDST
VDD Rising from 0V
VDD Falling after Turn-on
VDD = 12V, after Turn-on
VDD = 12V, before Turn-on
17.6 18.6 19.6 V
5.25 5.5 5.75 V
240 340 440 uA
23
45
µA
1
µA
10
ms
fSW
FCLAMP
DMAX
100% VOUTCV @ full load
25% VOUTCV @ full load
80
kHz
40
89
98 107 kHz
65
75
85
%
VFB
2.17 2.19 2.22 V
IFBLK
1
µA
No RCORD between VDD and SW
0
RCORD = 300k
3
DVCOMP RCORD = 150k
6
%
RCORD = 75k
9
RCORD = 33k
12
Innovative PowerTM
-3-
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Copyright © 2012 Active-Semi, Inc.
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