rt9261b-45cx ETC-unknow, rt9261b-45cx Datasheet - Page 3

• Manufacturer Part Number: rt9261b-45cx
• Description: Vfm Step-up Dc/dc Converter
• Manufacturer: ETC-unknow

Absolute Maximum Ratings
Electrical Characteristics
Notes:
(1) V
(2) V
DS9261B-03 September 2001
Notes: (1) Applicable to RT9261B-xxCB
Output Voltage Accuracy
Input Voltage
Start-up Voltage
Hold-on Voltage
Input Current 1
Input Current 2
Input Current 3
LX Switching Current
LX Leakage Current
Maximum Oscillator Frequency
Oscillator Duty Cycle
Efficiency
V
LX
Output Voltage
LX Pin Voltage
CE Pin Voltage
LX Pin Output Current
Power Dissipation, P
SOT-89
SOT-25
Package Thermal Resistance
SOT-89, θ
SOT-89, θ
SOT-25, θ
Operating Temperature Range
Storage Temperature Range
Lead Temperature (Soldering, 10 sec.)
Voltage Limit
IN
IN
= 1.8V, V
= 3V, V
JC
JA
JA
SS
(1) (2)
Parameter
SS
(1)
= 0V, I
= 0V, I
V
3.5V < V
V
3.5V < V
V
3.5V < V
D
OUT
OUT
OUT
OUT
@ T
OUT
≤ 3.5V
≤ 3.5V
≤ 3.5V
= 1mA, Topt = 25°C, and External Circuit of Typical Application
A
= 1mA, Topt = 25°C, and External Circuit of Typical Application
= 25°C
OUT
OUT
OUT
(1)
≤ 5V
(1)
≤ 5V
(1)
≤ 5V
(Refer to Fig. 1)
(2)
(2)
(2)
∆V
V
V
V
I
I
F
D
SWITCHING
LEAKAGE
Symbol
MAX
IN
ST
HO
OSC
OUT
Preliminary
I
I
To be measured at V
switch off condition
V
V
On (V
LX switch on
To be measured at V
continuous switching
To be measured at V
no load (guaranteed by I
and I
OUT
OUT
LX
LX
= 0.4V
= 6V
= 1mA, V
= 1mA, V
Test Conditions
2
LX
)
“L”) side
IN
IN
: 0 → 2V
: 2 → 0V
OUT
IN
IN
in
in
1
in
0.65
Min
120
160
140
0.7
65
-2
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www.richtek-ic.com.tw
Typ
190
RT9261B
0.8
6.5
0.8
24
36
18
20
75
80
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-20 to +85°C
8V
8V
-0.3 to V
400mA
0.5W
0.25W
100°C/W
300°C/W
250°C/W
-65°C to 150°C
260°C
Max Units
240
0.5
1.0
+2
36
45
10
36
45
85
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7
1
OUT
KHz
mA
+0.3V
µA
µA
µA
µA
%
%
%
V
V
V
V
3