RT9209 RICHTEK [Richtek Technology Corporation], RT9209 Datasheet - Page 5

• Manufacturer Part Number: RT9209
• Description: Synchronous Buck PWM DC-DC with Enable & PGOOD
• Manufacturer: RICHTEK [Richtek Technology Corporation]

DS9209/A-08 March 2007
Electrical Characteristics
(V
V
Nominal Supply Current
Power-On Reset
Rising V
V
Reference
Reference Voltage
Oscillator
Free Running Frequency
Ramp Amplitude
Error Amplifier
DC gain
PWM Controller Gate Driver
Upper Drive Source
Upper Drive Sink
Lower Drive Source
Lower Drive Sink
Protection
FB Over-Voltage Trip
FB Under-Voltage Trip
Power Good Threshold
Power Good Hysteresis
Power Good Sink Capability
SS Source Current
CC
CC
CC
= 5V, T
Threshold Hysteresis
Supply Current
CC
A
Threshold
= 25°C, Unless otherwise specified.)
Parameter
RT9209
RT9209A
I
Δ V
R
R
R
R
CC
Symbol
UGATE
UGATE
LGATE
LGATE
OSC
UGATE, LGATE open
BOOT= 12V
BOOT-V
V
V
V
FB Rising
FB Falling
FB pin Rising
I
PGOOD
UGATE
CC
LGATE
- V
LGATE
= 1mA
Test Conditions
= 1V
= 1V
UGATE
= 1V,
= 1V
0.784
Min
210
350
3.7
0.3
33
86
12
--
--
--
--
--
--
--
--
--
--
1.75
Typ
260
400
RT9209/A
4.1
0.5
0.8
0.6
35
90
20
3
7
7
7
3
1
2
www.richtek.com
0.816
Max
310
450
4.5
0.7
7.5
0.4
40
12
95
32
--
--
6
6
4
--
--
Units
V
kHz
mA
dB
μA
Ω
Ω
Ω
Ω
%
%
V
V
V
P-P
V
V
V
5