rt9202b Richtek Technology Corporation, rt9202b Datasheet - Page 5

• Manufacturer Part Number: rt9202b
• Description: Single Synchronous Buck Dc-dc Controller
• Manufacturer: Richtek Technology Corporation

Absolute Maximum Ratings
l
l
l
l
l
l
l
l
l
Recommended Operating Conditions
l
Electrical Characteristics
(V
DS9202B-03 March 2007
V
Power-On Reset
Reference
Oscillator
Error Amplifier
PWM Controller Gate Driver
Nominal Supply Current
Regulated Voltage from BOOT
Rising V
V
Rising V
Reference Voltage
Free Running Frequency
Ramp Amplitude
DC gain
Upper Drive Source
Upper Drive Sink
Lower Drive Source
Lower Drive Sink
Supply Input Voltage, V
BOOT & UGATE to GND -------------------------------------------------------------------------------------------- 15V
Input, Output or I/O Voltage ---------------------------------------------------------------------------------------- GND 0.3V to 7V
Power Dissipation, P
SOP-8 ------------------------------------------------------------------------------------------------------------------- 0.625W
Package Thermal Resistance (Note 4)
SOP-8,
Ambient Temperature Range --------------------------------------------------------------------------------------- 0 C to +70 C
Lead Temperature (Soldering, 10 sec.)--------------------------------------------------------------------------- 260 C
Storage Temperature Range ----------------------------------------------------------------------------------------
ESD Susceptibility (Note 2)
HBM (Human Body Mode) ------------------------------------------------------------------------------------------ 2kV
MM (Machine Mode) ------------------------------------------------------------------------------------------------- 200V
Junction Temperature Range ---------------------------------------------------------------------------------------
CC
CC
CC
= 5V, T
Supply Current / Regulated Voltage
Threshold Hysteresis
CC
OCSET
JA
A
-------------------------------------------------------------------------------------------------------------- 160 C/W
= 25° C, Unless otherwise specified.)
Threshold
Parameter
Threshold
D
@ T
CC
A
----------------------------------------------------------------------------------------- 7V
= 25 C
I
V
R
R
R
R
Symbol
CC
CC
UGATE
UGATE
LGATE
LGATE
V
OSC
(Note 1)
UGATE, LGATE open
V
V
V
BOOT= 12V
BOOT-V
V
V
V
BOOT
OCSET
OCSET
UGATE
CC
LGATE
- V
(Note 3)
Test Conditions
= 12V
LGATE
= 1V
= 4.5V
= 4.5V
= 1V
UGATE
= 1V,
= 1V
0.784
Min
3.85
250
0.3
0.8
32
--
--
--
--
--
--
5
Typ
1.25
1.75
0.8
300
4.1
0.5
35
RT9202B
3
6
7
5
4
2
65 C to +150 C
40 C to +125 C
To be continued
www.richtek.com
0.816
Max
4.35
350
0.7
2.0
7.5
38
11
--
6
7
6
4
Units
V
kHz
mA
dB
V
V
V
V
V
P-P
5