參數(shù)資料
型號： RT34063AGS
廠商： Richtek Technology Corporation
英文描述： DC-to-DC Converter Control Circuits
中文描述： 型DC - DC轉(zhuǎn)換器控制電路
文件頁數(shù)： 9/13頁
文件大小： 224K
代理商： RT34063AGS
RT34063A
9
DS34063A-13 March 2007
www.richtek.com
Absolute Maximum Ratings
z
Power Supply Voltage------------------------------------------------------------------------------------------------ 30V
z
Feedback Input Voltage Range -------------------------------------------------------------------------------------
0.3 to +30V
z
Switch Collector Voltage--------------------------------------------------------------------------------------------- 30V
z
Switch Emitter Voltage----------------------------------------------------------------------------------------------- 30V
z
Switch Collector to Emitter Voltage------------------------------------------------------------------------------- 30V
z
Driver Collector Voltage ---------------------------------------------------------------------------------------------- 30V
z
Driver Collector Current (see Note) -------------------------------------------------------------------------------- 100mA
z
Switch Current --------------------------------------------------------------------------------------------------------- 1.5A
z
Power Dissipation, P
D
@ T
A
= 25
°
C
DIP-8 --------------------------------------------------------------------------------------------------------------------- 1.25W
SOP-8-------------------------------------------------------------------------------------------------------------------- 0.625W
z
Package Thermal Resistance
DIP-8,
θ
JA
--------------------------------------------------------------------------------------------------------------- 100
°
C/W
SOP-8,
θ
JA
-------------------------------------------------------------------------------------------------------------- 160
°
C/W
z
Operating Junction Temperature ----------------------------------------------------------------------------------- +125
°
C
z
Storage Temperature Range ---------------------------------------------------------------------------------------- 65 to +150
°
C
Note:Maximum package power dissipation limits must be observed.
Electrical Characteristics
(VCC
= 5V, T
A
= 25°C, unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ Max Units
Oscillator
Frequency
V
PIN5
= 0V, C
T
= 1.0nF
5.0V
≤
VCC
≤
30V
I
DISCHG
5.0V
≤
VCC
≤
30V
Pin 7 to VCC
26
38
48
kHz
Charge Current
I
CHG
25
36
43
μ
A
μ
A
--
Discharge Current
160
250
290
Discharge to Charge Current Ratio
5.5
6.9
7.9
Current Limit Sense Voltage
V
LIMIT
I
CHG
= I
DISCHG
280
330
380
mV
Output Switch
Saturation Voltage, Darlington Connection
I
SW
= 1.0A, Pins1, 8 connected
I
SW
= 1.0A, R
PIN8
= 82
Ω
to
VCC, Forced
β
20
I
SW
= 1.0A, V
CE
= 5.0V
V
CE
= 30V
--
1.0
1.3
V
Saturation Voltage, Darlington Connection
--
0.45
0.7
V
DC Current Gain
50
75
--
--
Collector Off-state Current
--
0.01
100
μ
A
Comparator
Threshold Voltage
1.225 1.25 1.275
V
Threshold Voltage Line Regulation
3.0V
≤
VCC
≤
30V
V
IN
= 0V
--
1.4
5.0
mV
Input Bias Current
I
BIAS
--
-20
-400
nA
Total Device
Supply Current
I
CC
VCC = 5.0V to 30V, C
T
= 1.0nF,
Pin7 = VCC, V
PIN5
>
V
TH
, Pin2
= GND, Remaining pins open
--
3.0
4.5
mA
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