rt9246 Richtek Technology Corporation, rt9246 Datasheet - Page 6

• Manufacturer Part Number: rt9246
• Description: Multi-phase Controller Core Power Supply
• Manufacturer: Richtek Technology Corporation

RT9246
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
Reference and DAC
DACOUT Voltage Accuracy
DAC (VID0-VID4) Input Low
DAC (VID0-VID4) Input High
V
Power-On Reset
Supply Voltage, V
Input, Output or I/O Voltage ---------------------------------------------------------------------------------- GND-0.3V to V
Package Thermal Resistance (Note 4)
TSSOP-28, 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
Power Dissipation, P
TSSOP-28 ------------------------------------------------------------------------------------------------------ 1W
DVD
CC
= 5V, T
Supply Current
Threshold
A
= 25°C, unless otherwise specified)
JA
Parameter
-------------------------------------------------------------------------------------------------- 100°C/W
CC
CC
Input High
Input Low
------------------------------------------------------------------------------------------- 7V
------------------------------------------------------------------------------------------- 5V ± 10%
D
@ T
A
= 25°C
(Note 1)
I
V
V
V
V
f
f
ΔV
V
V
ΔV
ΔV
ΔV
CC
OSC
OSC_ADJ
Symbol
CCRTH
CCHYS
DVDTP
DVDHYS
RV
RT
OSC
DAC
ILDAC
IHDAC
PWM 1,2,3 Open
V
Enable
R
R
R
V
V
CC
(Note 3)
RT
RT
RT
DAC
DAC
Test Conditions
Rising
= 12kΩ
= 12kΩ
= 12kΩ
≥ 1V
< 1V
0.79
0.55
Min
170
−10
4.0
0.2
50
62
−1
--
--
--
--
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2
DS9246-06 March 2007
0.85
0.60
Typ
250
200
4.2
0.5
1.9
1.0
12
66
--
--
--
--
--
To be continued
Max
0.91
0.65
+10
230
400
4.5
0.8
+1
75
--
--
--
--
--
--
CC
Units
+0.3V
kHz
kHz
mA
mV
mV
%
%
V
V
V
V
V
V
V
V