rt9244 Richtek Technology Corporation, rt9244 Datasheet - Page 6

• Manufacturer Part Number: rt9244
• Description: Multi-phase Controller Core Power Supply
• Manufacturer: Richtek Technology Corporation

RT9244
Absolute Maximum Ratings
Recommended Operating Conditions
Electrical Characteristics
(V
www.richtek.com
6
Nominal Supply Current
POR Threshold
Hysteresis
V
Oscillator
Free Running Frequency
Frequency Adjustable Range
Ramp Amplitude
Ramp Valley
Maximum On-Time of Each Channel
RT Pin Voltage
DACOUT Voltage Accuracy
DAC (VID0-VID4) Input Low
DAC (VID0-VID4) Input High
V
Power-On Reset
Reference and DAC
Supply Voltage, V
Input, Output or I/O Voltage ---------------------------------------------------------------------------------- GND-0.3V to V
Package Thermal Resistance
SOP-32, θ
Junction Temperature ------------------------------------------------------------------------------------------ 150°C
Lead Temperature (Soldering, 10 sec.) -------------------------------------------------------------------- 260°C
Storage Temperature Range --------------------------------------------------------------------------------- −65°C to 150°C
ESD Susceptibility (Note 2)
HBM (Human Body Mode) ----------------------------------------------------------------------------------- 2kV
MM (Machine Mode) ------------------------------------------------------------------------------------------- 200V
Supply Voltage, V
Ambient Temperature Range --------------------------------------------------------------------------------- 0°C to 70°C
Junction Temperature Range --------------------------------------------------------------------------------- 0°C to 125°C
CC
DVD
CC
= 5V, T
Supply Current
Threshold
A
JA
= 25°C, unless otherwise specified)
----------------------------------------------------------------------------------------------------- 50°C/W
Parameter
CC
CC
Trip (Low to High)
Hysteresis
------------------------------------------------------------------------------------------- 7V
------------------------------------------------------------------------------------------- 5V ± 10%
(Note 1)
I
V
V
V
V
f
f
ΔV
V
V
ΔV
V
V
CC
OSC
OSC_ADJ
Symbol
CCRTH
CCHYS
DVDTP
DVDHYS
RV
RT
ILDAC
IHDAC
OSC
DAC
PWM 1,2,3,4 Open
V
Enable
R
R
R
V
V
(Note 3)
CC
RT
RT
DAC
DAC
RT
Test Conditions
Rising
= 12kΩ
= 12kΩ
= 12kΩ
≥ 1V
< 1V
0.55
Min
170
−10
4.0
0.2
2.0
50
62
−1
--
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DS9244-06 March 2007
0.60
Typ
200
4.2
0.5
2.0
1.9
1.0
12
50
66
--
--
--
--
--
To be continued
Max
0.65
230
400
+10
4.5
0.8
75
+1
--
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--
--
--
--
--
CC
+0.3V
Units
kHz
kHz
mA
mV
mV
%
%
V
V
V
V
V
V
V
V