rt9232b Richtek Technology Corporation, rt9232b Datasheet - Page 5

• Manufacturer Part Number: rt9232b
• Description: Programmable Frequency Synchronous Buck Controller
• Manufacturer: Richtek Technology Corporation

Absolute Maximum Ratings
Recommended Operating Conditions
Electrical Characteristics
(V
DS9232B-03 March 2007
OCSET Rising Threshold for start up V
V
Nominal Supply Current
Power-On Reset (POR)
V
Power On Reset Hysteresis
Enable Input Threshold (ON)
Enable Input Threshold (OFF)
Oscillator
Free Running Frequency
Ramp Amplitude
DC ------------------------------------------------------------------------------------------------------------------- −5V to 15V
DC ------------------------------------------------------------------------------------------------------------------- −0.3V to V
Supply Input Voltage, V
PHASE to GND
< 200ns ------------------------------------------------------------------------------------------------------------ −10V to 30V
BOOT to PHASE ------------------------------------------------------------------------------------------------ 15V
BOOT to GND
< 200ns ------------------------------------------------------------------------------------------------------------ −0.3V to 42V
SS, FB, COMP, RT --------------------------------------------------------------------------------------------- 6V
Input, Output or I/O Voltage ----------------------------------------------------------------------------------- GND−0.3V to V
Junction Temperature ------------------------------------------------------------------------------------------ 150°C
Storage Temperature Range ----------------------------------------------------------------------------------
Ambient Temperature Range ---------------------------------------------------------------------------------
Junction Temperature Range ---------------------------------------------------------------------------------
Lead Temperature (Soldering, 10 sec.) -------------------------------------------------------------------- 260°C
Supply Voltage to Drain of Upper MOSFETs, V
CC
Package Thermal Resistance (Note 4)
ESD Susceptibility (Note 2)
HBM (Human Body Mode) ----------------------------------------------------------------------------------- 2kV
Supply Input Voltage, V
MM (Machine Mode) ------------------------------------------------------------------------------------------- 150V
SOP-14, θ
CC
CC
= 12V, T
Supply Current
Rising Threshold
JA
A
Parameter
= 25°C, Unless otherwise specified.)
----------------------------------------------------------------------------------------------------- 100°C/W
CC
CC
RT9232B
Variation
, PVCC --------------------------------------------------------------------------- 15V
------------------------------------------------------------------------------------ 12V
I
V
V
V
f
ΔV
CC
OSC
OCSET_ON
Symbol
CC_ON
EN_ON
EN,_OFF
OSC
(Note 1)
IN
------------------------------------------------------- 3.3V, 5V to 12V
EN = V
V
V
V
V
6k < (RT to GND) < 200k
OCSET
OCSET
OCSET
OCSET
(Note 3)
CC
Test Conditions
= 4.5V
= 4.5V
= 4.5V
= 4.5V
, UGATE, LGATE open
Min
170
−20
8.4
0.3
0.8
--
--
--
--
−
−
−
65°C to 150°C
40°C to 85°C
40°C to 125°C
Typ.
200
0.7
1.5
1.5
RT9232B
±
--
--
--
--
3
10%
To be continued
www.richtek.com
Max
10.4
CC
230
20
--
--
--
--
2
2
+15V
CC
±
+ 0.3V
10%
Units
V
kHz
mA
%
P-P
V
V
V
V
V
5