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ACT6308 Datasheet(Fiches technique) 3 Page - Active-Semi, Inc

Numéro de pièce ACT6308
Description  Low Input High Efficiency Synchronous Step-Up DC/DC Converter
Télécharger  9 Pages
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Fabricant  ACTIVE-SEMI [Active-Semi, Inc]
Site Internet  http://www.active-semi.com
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ACT6308
Rev PrB, 20-Feb-08
Innovative Products. Active Solutions.
- 3 -
www.active-semi.com
Copyright © 2008 Active-Semi, Inc.
ABSOLUTE MAXIMUM RATINGS
: 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
(VIN = 1.5V, VOUT = 3.3V, TA = 25°C, unless otherwise specified.)
PARAMETER
VALUE
UNIT
OUT, EN to G
-0.3 to 6
V
FB, LX to G
-0.3 to VOUT + 0.3
V
Continuous LX Current
Internally Limited
A
Maximum Power Dissipation (derate 5mV/°C above TA = 50°C)
0.53
W
Junction to Ambient Thermal Resistance (θJA)
190
°C/W
Operating Junction Temperature
-40 to 150
°C
Storage Temperature
-55 to 150
°C
Lead Temperature (Soldering, 10 sec)
300
°C
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Minimum Operating Input Voltage
VIN
0.6
V
Startup Voltage
VIN
ILOAD = 1mA
1
1.18
V
Output Voltage
VOUT
FB = OUT; 60mVPP Ripple
3.2
3.3
3.4
FB = G; 40mVPP Ripple
4.85
5
5.15
Output Voltage Range
External Feedback Divider
2
5
V
Quiescent Current at OUT
IQ
VFB = 1.3V
17
34
µA
Shutdown Supply Current
ISD
EN = G
0.1
1
µA
Startup to Normal Transition Threshold
1.85
V
FB Feedback Voltage
VFB
VOUT = 2V to 5V
1.15
1.180
1.21
V
FB Input Current
FB = 1.3V
50
nA
Power Switch Current Limit
ILIM
0.35
0.4
0.6
A
Power Switch On Resistance
RONN
ILX = 100mA
0.19
0.4
Synchronous Rectifier On Resistance
RONP
ILX = -100mA
0.21
0.4
LX Leakage Current
EN = G, VLX = 0 or 3.3V
0.1
1
µA
Maximum Switch On-Time
tONMAX
1.2
1.5
1.8
µs
Minimum Switch Off-Time
tOFFMIN
0.24
0.3
0.36
µs
EN Logic Low Threshold
VIL
0.4
V
EN Logic High Threshold
VIH
0.6
V
EN Input Current
1
µA
V
Maximum Operating Input Voltage
VIN
5
V




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