RT7275/76
Absolute Maximum Ratings
(Note 1)
Supply Input Voltage, VIN, VINR (TSSOP-14 (Exposed Pad)) -----------------------------------------
−0.3V
to 21V
Switch Node, SW -------------------------------------------------------------------------------------------------
−0.8V
to (V
VIN
+ 0.3V)
Switch Node, SW (<10ns) ---------------------------------------------------------------------------------------
−5V
to 25V
BOOT to SW -------------------------------------------------------------------------------------------------------
−0.3V
to 6V
PVCC ----------------------------------------------------------------------------------------------------------------
−0.3V
to 6V
PVCC to VIN (WDFN-10L 3x3) or VINR (TSSOP-14 (Exposed Pad)) ---------------------------------
−18V
to 0.3V
Other Pins -----------------------------------------------------------------------------------------------------------
−0.3V
to 21V
Power Dissipation, P
D
@ T
A
= 25°C
TSSOP-14 (Exposed Pad) -------------------------------------------------------------------------------------- 2.50W
WDFN-10L 3x3 ----------------------------------------------------------------------------------------------------- 1.67W
Package Thermal Resistance (Note 2)
TSSOP-14 (Exposed Pad),
θ
JA
-------------------------------------------------------------------------------- 40°C/W
WDFN-10L 3x3,
θ
JA
----------------------------------------------------------------------------------------------- 60°C/W
WDFN-10L 3x3,
θ
JC
----------------------------------------------------------------------------------------------- 7.5°C/W
Junction Temperature Range ------------------------------------------------------------------------------------ 150°C
Lead Temperature (Soldering, 10 sec.) ----------------------------------------------------------------------- 260°C
Storage Temperature Range ------------------------------------------------------------------------------------
−65°C
to 150°C
ESD Susceptibility (Note 3)
HBM (Human Body Model) -------------------------------------------------------------------------------------- 2kV
Recommended Operating Conditions
(Note 4)
Supply Input Voltage, VIN --------------------------------------------------------------------------------------- 4.5V to 18V
Junction Temperature Range ------------------------------------------------------------------------------------
−40°C
to 125°C
Ambient Temperature Range ------------------------------------------------------------------------------------
−40°C
to 85°C
Electrical Characteristics
(V
IN
= 12V, T
A
= 25°C, unless otherwise specified)
Parameter
Supply Current
Supply Current (Shutdown)
Supply Current (Quiescent)
Logic Threshold
EN Voltage
Logic High
Logic Low
Symbol
Test Conditions
V
EN
= 0V
V
EN
= 3V, V
FB
= 1V
Min
--
--
2
--
Typ
1
0.7
--
--
Max
10
--
--
0.4
Unit
μA
mA
V
IH
V
IL
V
FB_TH
I
FB
R
DIS
V
PVCC
4.5V
≤
V
IN
≤
18V
V
FB
= 0.8V
V
EN
= 0V, V
VOUT
= 0.5V
6V
≤
V
IN
≤
18V, 0 < I
PVCC
<
5mA
6V
≤
V
IN
≤
18V, I
PVCC
= 5mA
V
V
FB
Voltage and Discharge Resistance
Feedback Threshold Voltage
Feedback Input Current
VOUT Discharge Resistance
PVCC Output
PVCC Output Voltage
PVCC Line Regulation
4.7
--
5.1
--
5.5
20
V
mV
0.757
−0.1
--
0.765 0.773
0
50
0.1
100
V
μA
Ω
Copyright
©
2013 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS7275/76-00
January 2013
www.richtek.com
3
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
