rt9218 Richtek Technology Corporation, rt9218 Datasheet - Page 5

• Manufacturer Part Number: rt9218
• Description: 5v/12v Synchronous Buck Dc-dc Linear Power Controller
• Manufacturer: Richtek Technology Corporation

Absolute Maximum Ratings
Recommended Operating Conditions
Electrical Characteristics
(V
DS9218-08 March 2007
Free Running Frequency
V
Nominal Supply Current
Power-On Reset
POR Threshold
Hysteresis
Switcher Reference
Reference Voltage
Oscillator
Ramp Amplitude
DC ------------------------------------------------------------------------------------------------------------- −5V to 15V
DC ------------------------------------------------------------------------------------------------------------- −0.3V to V
Supply Voltage, V
BOOT, V
PHASE to GND
< 200ns ------------------------------------------------------------------------------------------------------ −10V to 30V
BOOT to PHASE ------------------------------------------------------------------------------------------ 15V
BOOT to GND
< 200ns ------------------------------------------------------------------------------------------------------ −0.3V to 42V
UGATE ------------------------------------------------------------------------------------------------------- V
LGATE ------------------------------------------------------------------------------------------------------- GND − 0.3V to V
Input, Output or I/O Voltage ----------------------------------------------------------------------------- GND − 0.3V to 7V
Package Thermal Resistance (Note 4)
SOP-14, θ
Junction Temperature ------------------------------------------------------------------------------------- 150°C
Lead Temperature (Soldering, 10 sec.) --------------------------------------------------------------- 260°C
Storage Temperature Range ----------------------------------------------------------------------------
ESD Susceptibility (Note 2)
HBM (Human Body Mode) ------------------------------------------------------------------------------ 2kV
MM (Machine Mode) -------------------------------------------------------------------------------------- 200V
Supply Voltage, V
Junction Temperature Range ----------------------------------------------------------------------------
Ambient Temperature Range ----------------------------------------------------------------------------
CC
CC
= 5V/12V, T
Supply Current
BOOT
JA
Parameter
------------------------------------------------------------------------------------------------- 127.67°C/W
- V
A
= 25°C, unless otherwise specified)
PHASE
CC
CC
-------------------------------------------------------------------------------------- 16V
-------------------------------------------------------------------------------------- 5V ± 5%,12V ± 10%
------------------------------------------------------------------------------------ 16V
I
V
V
V
f
ΔV
Symbol
CC
OSC
CCRTH
CCHYS
REF
OSC
(Note 1)
UGATE and LGATE Open
V
V
V
CC
CC
CC
Rising
= 12V
= 12V
Test Conditions
(Note 3)
0.784
0.35
−
−
−
Min
250
--
--
--
PHASE
40°C to 150°C
40°C to 125°C
40°C to 85°C
− 0.3V to V
Typ
300
4.1
0.5
0.8
1.5
6
CC
RT9218
To be continued
www.richtek.com
+15V
0.816
Max
350
4.5
15
--
--
VCC
BOOT
+ 0.3V
Units
+ 0.3V
V
kHz
mA
V
V
V
P-P
5