rt9259c Richtek Technology Corporation, rt9259c Datasheet - Page 5

• Manufacturer Part Number: rt9259c
• Description: Synchronous Buck Dc-dc Linear Power Controller
• Manufacturer: Richtek Technology Corporation

Note 1. Stresses listed as the above "Absolute Maximum Ratings" may cause permanent damage to the device. These are for
Note 2. Devices are ESD sensitive. Handling precaution recommended.
Note 3. The device is not guaranteed to function outside its operating conditions.
Note 4. θ
DS9259C-03 August 2007
Oscillator
Free Running Frequency
Ramp Amplitude
Reference Voltage
Gate Driver
PWM Error Amplifier Reference
Linear Driver Reference
Error Amplifier
DC Gain
Gain-Bandwidth Product
Slew Rate
Upper Drive Source
Upper Drive Sink
Lower Drive Source
Lower Drive Sink
Protection
Under Voltage Protection
Soft-Start Time Interval
Over Current Threshold
RT_DIS Shutdown Threshold
Linear Regulator
Output High Voltage
Output Low Voltage
Source Current
Sink Current
stress ratings. Functional operation of the device at these or any other conditions beyond those indicated in the
operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended
periods may remain possibility to affect device reliability.
of JEDEC 51-7 thermal measurement standard.
JA
is measured in the natural convection at T
Parameter
f
OSC
V
V
GBW
SR
R
R
R
R
V
T
V
V
V
I
I
DRVSR
DRVSC
UVP
SS
OC
DRV
DRV
Symbol
REF1
REF2
UGATE
UGATE
LGATE
LGATE
A
R
V
V
V
V
V
C
= 25°C on a high effective 4-layers 2S2P thermal conductivity test board
RT
BO OT
BO OT
UGATE
CC
LGA TE
LOA D
= 110kΩ
– V
− V
− V
Test Conditions
= 5pF
LG ATE
= 1V
= 1V
PHASE
UGATE
= 1V
= 12V,
= 1V
0.792
0.792
0.36
0.35
Min
9.5
0.5
250
70
--
--
--
--
--
6
3
2
2
--
--
-400
10.3
Typ
0.4
0.4
0.1
300
0.8
0.8
88
15
1.6
--
--
6
4
4
2
3
4
RT9259C
www.richtek.com
0.808
0.808
Max
0.45
350
--
--
--
8
6
4
4
--
--
--
1
--
--
--
8
Units
MHz
V/us
kHz
mV
mA
mA
ms
dB
V
V
V
V
V
V
V
Ω
Ω
Ω
Ω
5