rt9226b ETC-unknow, rt9226b Datasheet - Page 2

• Manufacturer Part Number: rt9226b
• Description: Synchronous Pwm Step-down Dc/dc Converter Controller
• Manufacturer: ETC-unknow

RT9226B
Absolute Maximum Ratings
Electrical Characteristics
(VCC = 12V, GND = 0V, T
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2
VCC Supply Current
Oscillator
Internal Voltage Reference
Nominal Supply Current
Power-On Reset
VCC Rising Threshold
VCC Falling Threshold
Enable Input Threshold
Frequency
Ramp Amplitude
Reference Voltage
PWM Controller Error Amplifier
DC Gain
PWM Controller Gate Driver
UGATE Source
UGATE Sink
LGATE Source
LGATE Sink
Protection
OCSET Current Source
Soft-start Current
Over-voltage Trip (VSEN/VREF)
Power Good
Upper Threshold (VSEN/VREF)
Lower Threshold (VSEN/VREF)
PGOOD Voltage Low
Supply Voltage
Input, Output or I/O Voltage
Ambient Temperature Range
Operating Junction Temperature Range
Storage Temperature Range
Package Thermal Resistance
SOP-14, θ
Lead Temperature (Soldering, 10 sec.)
JA
Parameter
A
= 25°C, unless otherwise specified)
Symbol
I
V
∆V
V
R
R
I
R
I
I
V
CC
LGATE
OCSET
SS
EN
REF
PGOOD
UGATE
UGATE
LGATE
OSC
Preliminary
I
I
V
I
UGATE Open
V
V
V
V
I
UGATE
UGATE
LGATE
PGOOD
CC
OCSET
OCSET
OCSET
SS
Test Conditions
= 12V, V
= 1.5V
= 1V
= 0.3A
= 0.3A
= -5mA
= 4.5V
= 4.5V
= 4.5V
LGATE
= 6V
0.785
Min
170
170
0.2
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0.800
15V
GND–0.3V to Vcc+0.3V
0°C to 70°C
0°C to 125°C
−65°C to 150°C
160°C/W
300°C
Typ
200
200
108
500
115
9.5
7.5
1.9
0.5
65
10
92
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3
8
6
5
DS9226B-01 May 2001
0.815
Max
230
230
120
2.2
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Units
KHz
mA
mA
dB
µA
µA
%
%
%
Ω
Ω
Ω
V
V
V
V
V
V