M62291GP [MITSUBISHI]
5-PIN SOT-23 5.0V SYSTEM FIXED OUTPUT VOLTAGE DC-DC CONVERTER; 5引脚SOT- 23 5.0V系统的固定输出电压的DC -DC转换器
| 型号： | M62291GP |
| 厂家： | 
Mitsubishi Group |
| 描述： | 5-PIN SOT-23 5.0V SYSTEM FIXED OUTPUT VOLTAGE DC-DC CONVERTER |
| 文件： | 总3页 (文件大小：20K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MITSUBISHI <Standard Linear IC>
M62291GP
5-PIN SOT-23 5.0V SYSTEM FIXED OUTPUT VOLTAGE DC-DC CONVERTER
DESCRIPTION
M62291GP is an integrated circuit designed as 5V fixed output voltage
general purpose DC-DC converter.
PIN CONFIGURATION (TOP VIEW)
Integrating peripheral components in ultrasmall 5-pin SOT23 package
allows for simplified external circuit and compact low cost design.
This IC is applicable to portable equipments due to low circuit current
570uA(typ.)
Especially this is most suitable for localized power source such as audio
equipments, and so on as converter from 12 to 5V system.
COLLECTOR
OUTPUT
CLM
Vcc
1
2
3
5
GND
IN
4
FEATURES
Outline 5P2X-A
(SOT-23)
Wide operation power supply voltage range -- 6V to 15V(Vcc=12V typ.)
Low power consumption -- 570µA max.(Vcc=12V typ., at no load)
Built-in oscillator without peripheral components (110KHz typ.)
Built-in overcurrent protection circuit
Ultrasmall 5-pin SOT23 package
APPLICATIONS
Localized power supply for audio, portable equipments,
and general electric products
BLOCK DIAGRAM
CLM
VCC
5
4
CURRENT LIMIT
CIRCUIT
OP Amp
1.25V
PWM Comp
Collector
1
24k
IN
3
8.25k
OSC.
(120KHz)
2
GND
3
( 1 / )
Jan. 2000
MITSUBISHI <Standard Linear IC>
M62291GP
5-PIN SOT-23 5.0V SYSTEM FIXED OUTPUT VOLTAGE DC-DC CONVERTER
ABSOLUTE MAXIMUM RATINGS (Ta=25C, unless otherwise noted)
Symbol
Vcc
Io
Parameter
Supply Voltage
Conditions
Ratings
16
Unit
V
Output Current
100
mA
Ta=25C
Ta>25C
200
mW
mW/C
Pd
Power Dissipation
Thermal Derating Ratio
Operating Ambient Temperature
Storage Temperature
2.0
KTHETA
Topr
-20 to +85
C
C
-40 to +125
Tstg
ELECTRICAL CHARACTERISTICS (Ta=25C, Vcc=12V, unless otherwise noted)
Limits
Block
Symbol
Parameter
Conditions
Units
Min
6.0
-
Typ
Max
15
Vcc
Icc
Supply Voltage
V
No load
570
800
Supply Current
Output Voltage
µA
V
mV
Vo
4.75
5.0
5
5.25
30
REF Line Regulation
Vcc= 4 to 12V
Vreg-L
Error
Amp.
IN Input Current
-
160
300
Iin
µA
Oscillator
CLM
fosc Oscillator Frequency
70
120
140
175
170
KHz
mV
Current Limit Voltage
VTHCLM
TDUTY
Vcc - CLM
110
%
µA
V
Maximum ON Duty
90
-
Output
Output Leakage Current
-1
-
1
Vcc = 15V, Vc = 15V
Io = 100mA
ICL
Vsat
Output Saturation Voltage
1.2
2.0
3
( 2 / )
Jan. 2000
MITSUBISHI <Standard Linear IC>
M62291GP
5-PIN SOT-23 5.0V SYSTEM FIXED OUTPUT VOLTAGE DC-DC CONVERTER
1. Application Circuit (5.0V Output DC-DC Converter; M62291GP)
RCLM
0.09ohm
VIN (12V)
+
100µF
5
4
Vcc
CLM
1Kohm
VOUT(5.0V,1A)
Collector
IN
1
3
M62291
+
1Kohm
100µF
GND
2
150µH
Fig.1 Example of application circuit of M62270GP
Current Limit Detction:
When the voltage drop between 4pin and 5pin becomes 140mV or more,
Current Limit Detection circuit starts to operate. In the example of application
(fig.1), the current is limited to 1.5A.
2. THE EXPRESSION OF CIRCUIT CONSTANTS
CONSTANTS
EXPRESSIONS
TON
VO+VF
TOFF
VIN - VCE(sat) - VO
1
fosc
fosc:110KHz(Vcc=5V)
TON
(TON+TOFF)MAX
TOFF(MIN)
TON(MAX)
L(MIN)
(
)
( TON + TOFF ) /
1
1 +
TOFF
- TOFF
fosc
( VIN - VCE(sat) - VO ) TON(MAX)
DIo
1
2
DIo
Ipk
Io +
0.15
Ipk
DVCLM:150mV(Vcc=5V)
RCLM
• VF : Forward voltage drop of an external diode.
• Vsat : Output saturation voltage of an external switching transistor.
• DIo :Set to 1/3 to 1/5 of maximum output current
• Choose an external transistor, diode and inductor with peak current rating
greater than "Ipk".
( 3 / )
3
Jan. 2000
相关型号：
©2020 ICPDF网 联系我们和版权申明