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RT8859M Datasheet(PDF) 21 Page - Richtek Technology Corporation

Part # RT8859M
Description  Multi-Phase PWM Controller for CPU Core Power Supply
PDF  51 Pages
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Manufacturer  RICHTEK [Richtek Technology Corporation]
Direct Link  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT8859M Datasheet(HTML) 21 Page - Richtek Technology Corporation

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RT8859M
21
DS8859M-05 July 2012
www.richtek.com
©
Copyright
2012 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Thermal Throttling
VRHOT Output Voltage
VVRHOT
IVRHOT = 10mA
--
--
0.13
V
Current Monitor
Current Monitor Maximum
Output Voltage in
Operating Range
VIMON
VDAC = 1V,
VFB − VCC_SENSE = 100mV,
RIMONFB = 10kΩ, RIMON = 330kΩ
3.2
3.3
3.4
V
High Impedance Output
PWMx, ALERT, VRx_RDY,
VRHOT
ILEAK_OUT
−1
--
1
μA
PWM Driving Capability
PWM Source Resistor
RPWM_SOURCE
--
30
--
Ω
PWM Sink Resistor
RPWM_SINK
--
15
--
Ω
DVID, DVIDA, ICCMAX, ICCMAXA, and TMPMAX Pin Current
Current Sourcing Out from
DVIDx Pin to GND
IDVIDx
During dynamic VID fast event
6
8
10
μA
Current Sinking In from 5V
to ICCMAX Pin
IICCMAX
After VR_RDY
--
16
--
μA
Current Sourcing Out from
ICCMAXA Pin to GND
IICCMAXA
After VRA_RDY
--
128
--
μA
Current Sinking In from 5V
to TMPMAX Pin
ITMPMAX
After VR_RDY
--
16
--
μA
DVID and DVIDA Maximum Voltage
Maximum Allowable
Voltage at DVIDx Pin
VDVIDx_MAX
During Dynamic VID Event
--
--
2
V
SVID
SVID Frequency
fSVID
5
25
26.25
MHz
SVID Clock to Data Delay
tCO
4
--
8.3
ns
Setup Time of VDIO
tSU
7
--
--
ns
Hold Time of VDIO
tHLD
14
--
--
ns
VINITIAL Setting
VSETINI0
For VINITIAL = 0V
0
--
8
VSETINI0_9
For VINITIAL = 0.9V
17
--
20
VSETINI1_0
For VINITIAL = 1V
32.5
--
42.5
VSETINI1_1
For VINITIAL = 1.1V
57.5
--
67.5
SETINIx Threshold
Voltage
VSETINI1_5
For VINITIAL = 1.5V
82.5
--
100
%VCC
ADD Threshold
Logic-Low
VIL
Set SVID address 0000 0001
--
--
0.35
Logic-Medium VIM
Set SVID address 0010 0011
0.7
--
3
ADD Input
Threshold
Voltage
Logic-High
VIH
Set SVID address 0100 0101
VCC − 0.2
--
--
V



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