rt9259 Richtek Technology Corporation, rt9259 Datasheet - Page 5

• Manufacturer Part Number: rt9259
• 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
DS9259-03T00 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
Under Voltage Protection
Soft-Start Time Interval
Over Current Threshold
RT_DIS Shutdown Threshold
Output High Voltage
Output Low Voltage
Source Current
Sink Current
Protection
Linear Regulator
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
GBW
SR
R
R
R
R
V
T
V
V
V
I
I
V
DRVSR
DRVSC
SS
UVP
OC
DRV
DRV
REF1
REF2
UGATE
UGATE
LGATE
LGATE
Symbol
A
R
V
V
V
V
V
= 25°C on a high effective 4-layers 2S2P thermal conductivity test board
C
RT
BOOT
BOOT
UGATE
CC
LGATE
LOAD
= 110kΩ
– V
Test Conditions
− V
− V
= 5pF
LGATE
= 1V
= 1V
PHASE
UGATE
= 1V
= 12V,
= 1V
0.792
0.784
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
RT9259
www.richtek.com
0.808
0.816
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