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RT8296A データシートの表示(PDF) - Richtek Technology

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RT8296A Datasheet PDF : 14 Pages
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RT8296A
Absolute Maximum Ratings (Note 1)
l Supply Voltage, VIN ---------------------------------------------------------------------------------------------- 0.3V to 25V
l Input Voltage, SW ------------------------------------------------------------------------------------------------ 0.3V to (VIN + 0.3V)
l VBOOT VSW -------------------------------------------------------------------------------------------------------- 0.3V) to 6V
l Other Pins Voltage ----------------------------------------------------------------------------------------------- 0.3V to 6V
l BOOT SW -------------------------------------------------------------------------------------------------------- 0.3V to 6V
l Power Dissipation, PD @ TA = 25°C
SOP-8 (Exposed Pad) --------------------------------------------------------------------------------------------- 1.333W
l Package Thermal Resistance (Note 2)
SOP-8 (Exposed Pad), θJA ---------------------------------------------------------------------------------------- 75°C/W
SOP-8 (Exposed Pad), θJC --------------------------------------------------------------------------------------- 15°C/W
l Lead Temperature (Soldering, 10 sec.) ----------------------------------------------------------------------- 260°C
l Junction Temperature -------------------------------------------------------------------------------------------- 150°C
l Storage Temperature Range ------------------------------------------------------------------------------------ 65°C to 150°C
l ESD Susceptibility (Note 3)
HBM (Human Body Mode) ---------------------------------------------------------------------------------------- 2kV
MM (Machine Mode) ------------------------------------------------------------------------------------------------ 200V
Recommended Operating Conditions (Note 4)
l Supply Voltage, VIN ---------------------------------------------------------------------------------------------- 4.5V to 23V
l Junction Temperature Range ----------------------------------------------------------------------------------- 40°C to 125°C
l Ambient Temperature Range ----------------------------------------------------------------------------------- 40°C to 85°C
Electrical Characteristics
(VIN = 12V, TA = 25°C, unless otherwise specified)
Parameter
Symbol
Test Conditions
Shutdown Supply Current
Supply Current
Feedback Reference
Voltage
Error Amplifier
Transconductance
High Side Switch
On Resistance
Low Side Switch
On Resistance
High Side Switch Leakage
Current
Upper Switch Current Limit
COMP to Current Sense
Transconductance
Oscillation Frequency
Short Circuit Oscillation
Frequency
VEN = 0V
VEN = 3 V, VFB = 0.9V
VFB
4.5V VIN 23V
GEA
IC = ±10µA
RDS(ON)1
RDS(ON)2
GCS
fOSC1
fOSC2
VEN = 0V, VSW = 0V
Min. Duty Cycle,
VBOOT VSW = 4.8V
VFB = 0V
Maximum Duty Cycle
Minimum On Time
DMAX
tON
VFB = 0.7V
www.richtek.com
4
Min
--
--
0.788
--
--
--
--
--
--
300
--
--
--
Typ Max Unit
0.5
3
µA
0.8
1.2
mA
0.8 0.812
V
940
--
µA/V
85
--
m
85
--
m
0
10
µA
5.1
--
A
5.4
--
A/V
340 380 kHz
100
--
kHz
93
--
%
100
--
ns
To be continued
DS8296A-03 March 2011

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