RT8260A RICHTEK [Richtek Technology Corporation], RT8260A Datasheet - Page 3

• Manufacturer Part Number: RT8260A
• Description: 1.8A, 24V, 1.4MHz Step-Down Converter
• Manufacturer: RICHTEK [Richtek Technology Corporation]

Absolute Maximum Ratings
Recommended Operating Conditions
Electrical Characteristics
(V
DS8260A-03 March 2011
Feedback Reference Voltage
Feedback Current
Switch On Resistance
Switch Leakage
Current Limit
Oscillator Frequency
Maximum Duty Cycle
Minimum On-Time
Under Voltage Lockout
Threshold
Under Voltage Lockout
Threshold Hysteresis
EN Input Low Voltage
EN Input High Voltage
EN Pull Up Current
Shutdown Current
Quiescent Current
Thermal Shutdown
Supply Voltage, V
SW Voltage --------------------------------------------------------------------------------------------------- −0.3V to (V
BOOT Voltage ------------------------------------------------------------------------------------------------ (V
All Other Pins ------------------------------------------------------------------------------------------------- 0.3V to 6V
Power Dissipation, P
WDFN-8L 2x2 ------------------------------------------------------------------------------------------------- 0.833W
Package Thermal Resistance (Note 2)
WDFN-8L 2x2, θ
WDFN-8L 2x2, θ
Junction Temperature --------------------------------------------------------------------------------------- 150°C
Lead Temperature (Soldering, 10 sec.) ----------------------------------------------------------------- 260°C
Storage Temperature Range ------------------------------------------------------------------------------- −65°C to 150°C
ESD Susceptibility (Note 3)
HBM (Human Body Mode) --------------------------------------------------------------------------------- 2kV
MM (Machine Mode) ---------------------------------------------------------------------------------------- 200V
Supply Voltage, V
Output Voltage, V
EN Voltage, V
Junction Temperature Range ------------------------------------------------------------------------------ −40°C to 125°C
Ambient Temperature Range ------------------------------------------------------------------------------ −40°C to 85°C
IN
= 12V, T
Parameter
A
= 25° C unless otherwise specified)
EN
JA
JC
---------------------------------------------------------------------------------------------- 0V to 5.5V
OUT
IN
IN
------------------------------------------------------------------------------------------- 120°C/W
------------------------------------------------------------------------------------------- 8.2°C/W
----------------------------------------------------------------------------------------- 26V
----------------------------------------------------------------------------------------- 4.5V to 24V
D
--------------------------------------------------------------------------------------- 0.8V to 15V
@ T
A
= 25°C
V
I
R
I
f
t
I
I
T
Symbol
FB
LIM
SW
ON
SHDN
Q
FB
SD
DS(ON)
4.5V ≤ V
V
V
V
Rising
V
V
V
(Note 1)
FB
EN
BOOT
EN
EN
EN
= 0.8V
= 0V, V
= 0V
= 0V
= 2V, V
− V
IN
Test Conditions
SW
≤ 24V
SW
FB
= 4.8V
= 1V (Not Switching)
= 0V
(Note 4)
0.79
Min
2.2
1.2
3.9
1.4
--
--
--
--
--
--
--
--
--
--
--
SW
0.55
Typ
100
200
150
0.8
0.1
0.3
2.9
1.4
4.2
75
25
--
--
--
1
− 0.3V) to (V
RT8260A
www.richtek.com
Max
0.81
IN
0.3
1.6
4.5
0.4
10
--
--
--
--
--
--
--
--
--
1
+ 0.3V)
SW
MHz
Unit
mA
mV
μA
μA
μA
μA
°C
ns
+ 6V)
%
Ω
V
A
V
V
V
3