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RT8207LZQW Datasheet(PDF) 9 Page - Richtek Technology Corporation

Part # RT8207LZQW
Description  Complete DDRII/DDRIII/Low-Power DDRIII/DDRIV Memory Power Supply Controller
PDF  27 Pages
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Manufacturer  RICHTEK [Richtek Technology Corporation]
Direct Link  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT8207LZQW Datasheet(HTML) 9 Page - Richtek Technology Corporation

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9
DS8207L/M-08 September 2016
www.richtek.com
RT8207L/M
©
Copyright 2016 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
Electrical Characteristics
(VIN = 15V, VDD = VVDDP = 5V, RTON = 1M
Ω, TA = 25°C, unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
PWM Controller
Quiescent Supply Current
(VDD + VDDP)
FB forced above the regulation point,
VS5 = 5V, VS3 = 0V
--
470
1000
A
TON Operating Current
RTON = 1M
--
15
--
A
IVLDOIN BIAS Current
VS5 = VS3 = 5V, VTT = No Load
--
1
--
A
IVLDOIN Standby Current
VS5 = 5V, VS3 = 0V, VTT = No Load
--
0.1
10
A
VDD + VVDDP
--
1
10
TON
--
0.1
5
S5/S3 = 0V
1
0.1
1
Shutdown Current
(VS5 = VS3 = 0V)
ISHDN
IVLDOIN
--
0.1
1
A
FB Reference Voltage
VREF
VDD = 4.5V to 5.5V
0.742
0.75
0.758
V
FB = GND
--
1.5
--
Fixed VDDQ Output
Voltage
FB = VDD
--
1.8
--
V
FB Input Bias Current
FB = 0.75V
1
0.1
1
A
VDDQ Voltage Range
0.75
--
3.3
V
On-Time
RTON = 1M, VVDDQ = 1.25V
267
334
401
ns
Minimum Off-Time
250
400
550
ns
VDDQ Input Resistance
--
100
--
k
VDDQ Shutdown
Discharge Resistance
VS5 = GND
--
15
--
Current Sensing
CS Sink Current
VCS > 4.5V, After UV Blank Time
9
10
11
A
Current Comparator
Offset
GND
 PHASE, RCS = 5k
15
--
15
mV
Zero Crossing Threshold
GND
PHASE
5
--
10
mV
Fault Protection
GND
PHASE, RCS = 5k
35
50
65
Current Limit (Positive)
GND
PHASE, RCS = 20k
170
200
230
mV
Under Voltage Protection
Threshold
VUVP
60
70
80
%
Over Voltage Protection
Threshold
VOVP
With respect to error comparator
threshold
110
115
120
%
Over Voltage Fault Delay
FB forced above over voltage
threshold
--
20
--
s
VDD POR Threshold
Rising edge, hysteresis = 120mV,
PWM disabled below this level
3.9
4.2
4.5
V
Under Voltage Blank Time
From S5 signal going high
--
5
--
ms
Thermal Shutdown
TSD
--
165
--
°C
Thermal Shutdown
Hysteresis
TSD
--
10
--
°C



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