RT7275/76
Absolute Maximum Ratings (Note 1)
z Supply Input Voltage, VIN, VINR (TSSOP-14 (Exposed Pad)) ----------------------------------------- −0.3V to 21V
z Switch Node, SW ------------------------------------------------------------------------------------------------- −0.8V to (VVIN + 0.3V)
z Switch Node, SW (<10ns)--------------------------------------------------------------------------------------- −5V to 25V
z BOOT to SW ------------------------------------------------------------------------------------------------------- −0.3V to 6V
z PVCC ---------------------------------------------------------------------------------------------------------------- −0.3V to 6V
z PVCC to VIN (WDFN-10L 3x3) or VINR (TSSOP-14 (Exposed Pad))--------------------------------- −18V to 0.3V
z Other Pins----------------------------------------------------------------------------------------------------------- −0.3V to 21V
z Power Dissipation, PD @ TA = 25°C
TSSOP-14 (Exposed Pad) -------------------------------------------------------------------------------------- 2.50W
WDFN-10L 3x3 ----------------------------------------------------------------------------------------------------- 1.67W
z Package Thermal Resistance (Note 2)
TSSOP-14 (Exposed Pad), θJA -------------------------------------------------------------------------------- 40°C/W
WDFN-10L 3x3, θJA ----------------------------------------------------------------------------------------------- 60°C/W
WDFN-10L 3x3, θJC ----------------------------------------------------------------------------------------------- 7.5°C/W
z Junction Temperature Range------------------------------------------------------------------------------------ 150°C
z Lead Temperature (Soldering, 10 sec.)----------------------------------------------------------------------- 260°C
z Storage Temperature Range ------------------------------------------------------------------------------------ −65°C to 150°C
z ESD Susceptibility (Note 3)
HBM (Human Body Model)-------------------------------------------------------------------------------------- 2kV
Recommended Operating Conditions (Note 4)
z Supply Input Voltage, VIN --------------------------------------------------------------------------------------- 4.5V to 18V
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
Supply Current
Symbol
Test Conditions
Min
Typ
Max
Unit
Supply Current (Shutdown)
Supply Current (Quiescent)
Logic Threshold
V
V
= 0V
--
--
1
10
--
μA
EN
EN
= 3V, V = 1V
0.7
mA
FB
Logic High
EN Voltage
V
V
2
--
--
--
IH
V
Logic Low
--
0.4
IL
V
FB
Voltage and Discharge Resistance
Feedback Threshold Voltage
Feedback Input Current
VOUT Discharge Resistance
PVCC Output
V
4.5V ≤ V ≤ 18V
0.757 0.765 0.773
V
μA
Ω
FB_TH
IN
I
V
= 0.8V
−0.1
0
0.1
FB
FB
EN
R
V
= 0V, V
= 0.5V
VOUT
--
50
100
DIS
PVCC Output Voltage
PVCC Line Regulation
V
PVCC
6V ≤ V ≤ 18V, 0 < I
< 5mA
4.7
--
5.1
--
5.5
20
V
IN
PVCC
6V ≤ V ≤ 18V, I
= 5mA
PVCC
mV
IN
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 ]
