rt9645 Richtek Technology Corporation, rt9645 Datasheet - Page 7

• Manufacturer Part Number: rt9645
• Description: Channels Acpi Regulator
• Manufacturer: Richtek Technology Corporation

DS9645-00 August 2007
Oscillator and Soft-Start
PW M Frequency
Ramp Amplitude
Ramp Offset
Soft-Start Interval
Reference Voltage
Reference Voltage V
VDDQ PWM1 Controller
UGATE Source
UGATE Sink
LGATE Source
LGATE Sink
OC Current Source
Under Voltage Lockout
COMP1 Enable Threshold
PWM2 Controller
OC current source
Under Voltage Lockout
SS2/EN2 Source Current
Enable Threshold
UV Protection Enable Threshold
FSB_VTT Regulator
External Gate Driver
Gate Source Current
Gate Sink Current
Under Voltage Lockout
3VSB Regulator
Regulated Voltage
Source Current
OC Current
Under Voltage Lockout
Others
S3, S5 High Input Threshold
S3, S5 Low Input Threshold
Thermal Shutdown Limit
Parameter
REF
f
ΔV
V
T
V
I
R
I
R
I
V
V
V
I
I
V
I
V
I
V
V
V
I
I
V
V
V
T
OSC
Symbol
UGATEsc
LGATEsc
OC1
SC3
SK3
OC2
SS2
SC4
OC4
OSC_OS
SS
REF
OH3
UV3
UGATEsk
LGATEsk
UV1
EN1
SHDN
UV2
EN2
PT_EN2
3VSB
UV4
IL
IH
OSC
V
V
V
V
V
V
V
V
V
V
V
V
V
BOOT
UGATE
BOOT
UGATE
PVIN
PVIN
IS NS
IS NS2
SS2/EN2
DD
PVIN
VTT_DRV
VTT DRV
Preliminary
= 5V
= 12V; V
= 12V; V
= 0V
= 12V
−V
−V
= 0V
− V
− V
= 0V
PHASE
PHASE
= 3V
= 0.6V
Test Condition
PHA SE
PHASE
LGATE
LGATE
= 12V;
= 12V;
= 6V
= 1V
= 6V
= 1V
0.784
10.5
Min
265
0.5
0.5
0.1
3.2
2.2
34
34
15
30
40
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4
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Typ
300
140
1.2
0.9
0.8
0.2
0.5
3.6
3.3
40
75
40
75
22
75
40
80
75
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8
1
4
1
3
5
4
RT9645
www.richtek.com
0.816
Max
0.75
345
3.4
46
46
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8
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5
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Units
kHz
mA
mA
mA
mA
ms
μA
μA
μA
%
%
%
%
°C
V
V
V
A
Ω
A
Ω
V
V
V
V
V
V
V
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