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LA5677M の電気的特性と機能

LA5677MのメーカーはSanyo Semicon Deviceです、この部品の機能は「Monolithic Linear IC」です。


製品の詳細 ( Datasheet PDF )

部品番号 LA5677M
部品説明 Monolithic Linear IC
メーカ Sanyo Semicon Device
ロゴ Sanyo Semicon Device ロゴ 




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LA5677M Datasheet, LA5677M PDF,ピン配置, 機能
Ordering number : EN3660B
Monolithic Linear IC
LA5677M
Dual Switching Regulator Control IC
Overview
The LA5677M supports single-input control of the outputs
of two converters of arbitrary types, including step up, step
down and inverting. Since the LA5677M supports low
voltage (3.6 to 18 V) and high frequency (1 to 500 kHz)
operation, it is ideal for use in power supplies in battery
powered portable equipment.
Package Dimensions
unit: mm
3035A-MFP16
[LA5677M]
Features
• Operates at low voltages (3.6 to 18 V)
• Can be used with high frequency oscillators (1 to
500 kHz)
• Built-in low input malfunction prevention circuit
• Built-in timer-latch short circuit protection circuit
Specifications
Maximum Ratings at Ta = 25°C
Parameter
Maximum supply voltage
Error amplifier input voltage
Collector output voltage
Collector output current
Allowable power dissipation
Operating temperature
Storage temperature
Symbol
VCC max
VI
VO
IO
Pd max
Topr
Tstg
Operating Conditions at Ta = 25°C
Conditions
Parameter
Recommended supply voltage
Error amplifier input voltage
Collector output voltage
Collector output current
Feedback pin current
Feedback resistance
Timing capacitance
Timing resistance
Oscillator frequency
Symbol
VCC
VI
VO
IO
IFT
RNF
CT
RT
fOSC
Conditions
min
3.6
1.05
–0.3
100
150
5.1
1
SANYO: MFP16
Ratings
20
20
20
21
330
–20 to +85
–40 to +125
Unit
V
V
V
mA
mW
°C
°C
Ratings
typ
max
18
1.45
+18
20
45
15000
100
500
Unit
V
V
V
mA
µA
k
pF
k
kHz
Any and all SANYO products described or contained herein do not have specifications that can handle
applications that require extremely high levels of reliability, such as life-support systems, aircraft’s
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.
SANYO assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other
parameters) listed in products specifications of any and all SANYO products described or contained
herein.
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
O3098HA (OT)/92793TS A8-8023 No. 3660-1/7

1 Page





LA5677M pdf, ピン配列
Continued from preceding page.
LA5677M
Parameter
Symbol
Conditions
Error amplifier block
Output block
Input offset voltage
Input offset current
Input bias current
Common mode
input voltage range
Open loop gain
Unity gain
bandwidth
Common mode
rejection ratio
Maximum output
voltage amplitude (1)
Maximum output
voltage amplitude (2)
Output sink current
(pins 5, 12)
Output source
current (pins 5, 12)
Output leakage
current
Output saturation
voltage
Short circuit output
current
VIO
IIO
IB
VICR
AV
GB
With V (pins 5, 12) = 1.25 V
With V (pins 5, 12) = 1.25 V
With V (pins 5, 12) = 1.25 V
VCC = 3.6 to 18 V
RNF = 200 k
CMRR
VO + m
VO – m
IO + m VID = –0.1 V, VO = 1.25 V
IO – m VID = 0.1 V, VO = 1.25 V
Ileak
VO = 18 V
Vsat
IO = 10 mA
IOS VO = 6 V
PWM comparator
block
Whole device
Input threshold
voltage
Input sink current
(pins 5, 12)
Input source current
(pins 5, 12)
Standby current
Average supply
current
Vt0
Vt100
ICC1
ICC2
With a duty cycle of 0%
fosc = 10 kHz,
With a duty cycle of 100%
With V (pins 5, 12) = 1.25 V
With V (pins 5, 12) = 1.25 V
Output off state
RT = 10 k
min
–6
–100
1.05
Vref – 0.1
Ratings
typ
160
80
1.5
80
1.6
–70
1.20
1.0
60
2.05
1.45
1.6
–70
1.6
1.9
max
+6
+100
500
1.45
1.0
10
2
2.25
2.2
2.6
Unit
mV
nA
nA
V
dB
MHz
dB
V
V
mA
µA
µA
V
mA
V
V
mA
µA
mA
mA
Pin Functions
No. Pin
Function
1 CT
2 RT
3 OP1+
Triangle wave oscillator capacitor connection
Triangle wave oscillator resistor connection
Error amplifier 1 + input
4 OP1–
Error amplifier 1 – input
5 OP1OUT
Error amplifier 1 output
6 DEAD TIME1 Dead time 1 control
7 OUT1
Output 1
8 GND
Ground connection
No. Pin
Function
9 VCC
10 OUT2
Power supply input
Output 2
11 DEAD TIME2 Dead time 2 control
12 OP2OUT
13 OP2–
Error amplifier 2 output
Error amplifier 2 – input
14 OP2+
Error amplifier 2 + input
15 S. C. P
Short circuit protection circuit connection
16 Vref
Reference voltage (2.5 V)
No. 3660-3/7


3Pages


LA5677M 電子部品, 半導体
LA5677M
6. Error Amplifier Block
Error amplifiers 1 and 2 are amplifiers for detecting the output voltages, i.e., the LA5677M application system output
voltages. Since the common mode input voltage range is 1.05 to 1.45 V, we recommend setting their input voltages
to Vref/2. Pins 5 and 12 are the output pins, and the gain is set and the frequency characteristics adjusted with a
resistor and a capacitor connected between the outputs and the non-inverting inputs of each amplifier. The outputs
are also connected to the short circuit protection circuit detection circuit.
7. Output Block
The outputs are single end open collector outputs with an NPN Darlington pair structure.
Sample Application Circuit: +5 V, 1 A step-down converter and –5 V, 0.5 A polarity inverting converter using a
12 V input
No. 3660-6/7

6 Page



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部品番号部品説明メーカ
LA5677M

Monolithic Linear IC

Sanyo Semicon Device
Sanyo Semicon Device


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