RT8289 데이터 시트보기 (PDF) - Richtek Technology
부품명
상세내역
제조사
RT8289 Datasheet PDF : 13 Pages
| |||
RT8289
Absolute Maximum Ratings (Note 1)
z Supply Voltage, VIN ----------------------------------------------------------------------------------------- 0.3V to 34V
z Switching Voltage, SW (Note 2) ------------------------------------------------------------------------ −0.6V to (VIN + 0.3V)
z BOOT Voltage ------------------------------------------------------------------------------------------------ (VSW − 0.3V) to (VSW + 6V)
z Other Pins Voltage ------------------------------------------------------------------------------------------ −0.3V to 6V
z Power Dissipation, PD @ TA = 25°C
SOP-8 (Exposed Pad) -------------------------------------------------------------------------------------- 1.333W
z Package Thermal Resistance (Note 3)
SOP-8 (Exposed Pad), θJA -------------------------------------------------------------------------------- 75°C/W
SOP-8 (Exposed Pad), θJC -------------------------------------------------------------------------------- 15°C/W
z Junction Temperature --------------------------------------------------------------------------------------- 150°C
z Lead Temperature (Soldering, 10 sec.) ----------------------------------------------------------------- 260°C
z Storage Temperature Range ------------------------------------------------------------------------------- −65°C to 150°C
z ESD Susceptibility (Note 4)
HBM (Human Body Mode) --------------------------------------------------------------------------------- 2kV
MM (Machine Mode) ---------------------------------------------------------------------------------------- 200V
Recommended Operating Conditions (Note 5)
z Supply Voltage, VIN ----------------------------------------------------------------------------------------- 5.5V to 32V
z Enable Voltage, VEN ----------------------------------------------------------------------------------------- 0V to 5.5V
z Junction Temperature Range ------------------------------------------------------------------------------ −40°C to 125°C
z Ambient Temperature Range ------------------------------------------------------------------------------ −40°C to 85°C
Electrical Characteristics
(VIN = 12V, TA = 25°C unless otherwise specified)
Parameter
Symbol
Feedback Reference Voltage
High Side Switch-On Resistance
Low Side Switch-On Resistance
Upper Switch Leakage
VFB
RD S(ON)1
RD S(ON)2
Current Limit
ILI M
Current Sense Transconductance GCS
Oscillator Frequency
fSW
Short Circuit Oscillation Frequency
Maximum Duty Cycle
Minimum On-Time
Under Voltage Lockout Threshold
Ris ing
DMAX
tON
Under Voltage Lockout Threshold
H ysteresis
Logic Low Voltage
En Threshold
VIL
Logic High Voltage VIH
Enable Pull Up Current
Test Conditions
5.5V ≦ VIN ≦ 32V
VEN = 0V, VSW = 0V
Duty = 90%; VBOOT−SW = 4.8V
Output Current to VCOMP
VFB = 0V
VFB = 1V
Min
1.202
--
--
--
--
--
--
--
--
--
Typ Max
1.222 1.239
100 --
10 --
0
10
6.8 --
5.5 --
500 --
120 --
90 --
100 --
Unit
V
mΩ
Ω
μA
A
A/V
kHz
kHz
%
ns
--
4.2 --
V
-- 200 -- mV
--
-- 0.4
V
1.4 -- 5.5
--
1
-- μA
DS8289-01 March 2011
To be continued
www.richtek.com
3
Share Link: 