RT8889D Datasheet, PDF (16/44 Pages) Richtek Technology Corporation – 3-Phase PWM Controller

RT8889D
Parameter
S ymbol
Test Conditions
Min Typ Max Unit
Enable OFS function and offset 0V
1.16 1.2 1.24
Set OFS Voltage
Enable OFS function and offset 50mV 1.06 1.1 1.14
V_OFS
Enable OFS function and offset 250mV 0.66 0.7
0.74
V
Disable
--
-- 0.55
Protections
Under Voltage Lockout
Threshold
Over Voltage Protection
Threshold
V_UVLO
V_UVLO Falling edge hysteresis
VID higher than 1.5V
V_OV
VID lower than 1.5V
4.1 4.3 4.45
V
-- 200 --
mV
VID VID VID
+ 300 + 350 + 400 _mV
1800 1850 1900
Under Voltage Protection
Threshold
V_UV
Negative Voltage Protection
Threshold
V_NV
EN and VR_READY
with respect to VID voltage
400 350 300 mV
100 70 --
mV
EN Input
Voltage
Logic-High
Logic-Low
Leakage Current of EN
V_{E N_H}
V_{E N_L}
0.7
--
--
V
--
--
0.3
1
--
1
A
VR_READY Delay
VR_READY Pull Low
Voltage
T_{VR_RD} V_SEN = V_BOOT to VR_READY High
V_PGOOD I_{VR_READY} = 10mA
3
4.5
6
s
--
-- 0.13
V
Serial VID and VR_HOT
VCLK, VDIO ^Logic-High
Input Voltage
Logic-Low
Leakage Current of VCLK,
VDIO, ALERT and VR_HOT
V_IH
V_IL
I_{LEA K_I N}
With Respect to INTEL Spec. with
50mV hysteresis
0.65 --
--
V
--
-- 0.45
1
--
1
A
VDIO, ALERT and VR_HOT
Pull Low Voltage
V_REF and V_BOOT
V_REF Voltage
V_BOOT Voltage
ADC
V_REF
V_{B OOT}
Digital IMON Set
Update Period of IMON
TSEN Threshold for
Tmp_Zone [7] transition
V_IMON
T_IMON
V_TSEN
I_VDIO = 10mA
I_ALERT = 10mA
I_{VR_HOT} = 10mAs
V_BOOT Voltage set to 1.7V
V_IMON V_{IMON_INI} = 1.6V
V_IMON V_{IMON_INI} = 0.8V
V_IMON V_{IMON_INI} = 0V
100C
--
-- 0.13
V
0.55 0.6 0.65
V
1.692 1.7 1.708 V
252 255 258
125 128 131 Decimal
0
0
3
320 400 480
s
-- 1.887 --
V
Copyright ©2015 Richtek Technology Corporation. All rights reserved.
www.richtek.com
16
is a registered trademark of Richtek Technology Corporation.
DS8889D-00 April 2015