- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄374724 > SC2677TSTRT (Semtech Corporation) Dual Synchronous Voltage Mode Controller with Current Sharing Circuitry PDF資料下載
參數(shù)資料
| 型號： | SC2677TSTRT |
| 廠商： | Semtech Corporation |
| 英文描述： | Dual Synchronous Voltage Mode Controller with Current Sharing Circuitry |
| 中文描述： | 雙同步電壓模式控制器的電流共享電路 |
| 文件頁數(shù)： | 4/9頁 |
| 文件大?。?/td> | 163K |
| 代理商： | SC2677TSTRT |
4
2004 Semtech Corp.
www.semtech.com
POWER MANAGEMENT
Pin Configuration
SC2677
Ordering Information
EXPANDED PIN DESCRIPTION
Pin 1:
(VREF)
Internal 0.5V reference. Connected to the + input of
the master channel error amplifier.
Pin 2:
(FREQ)
External frequency adjustment. Connect a resistor to
AGND to set the switching frequency. Please see
more information in Application section.
Pin 3:
(VCC)
Bias pin for the controller. Connect a ceramic
decoupling capacitor from this pin to AGND with
minimum trace length.
Pin 4:
(+IN2)
“+” input of the slave error amplifier.
Pin 5, 16:
(-IN2, -IN1)
“-” inputs of the error amplifiers.
Pin 6, 15:
(COMP2, COMP1)
Compensation pins of the error amplifiers.
Pin 7, 14:
(BST2, BST1)
Supply pins for the high side drivers. Usually con-
nected to bootstrap circuit.
Pin 8, 13:
(DH2, DH1)
Gate drive pins for the top MOSFETs. Requires a
small series resistor.
Pin 9, 12:
(DL2, DL1)
Gate drive pins for the bottom MOSFETs. Requires a
small series resistor.
Pin 10:
(PGND)
Power GND. Return of the high side and low side gate
drivers.
Pin 11:
(BSTC)
Supply pin for bottom MOSFET gate drivers.
Pin 17:
(PHASING)
This pin controls the phase shift between master and
slave for optimum noise immunity. Use a resistive
divider from the FREQ pin (pin 2) to AGND, and
connect the tap of the resistive divider to pin 17.
Please see more information in Application section.
Pin 18:
(SS/ENA)
Soft start pin. Connect a ceramic capacitor from this
pin to AGND, and there is an internal current source
charging up this capacitor during soft start. The PWM
operation can be disabled if this pin is pulled low.
Pin 19:
(PWRGD)
Power good signal. This is an open collector output. It
is pulled low internally if output voltage is outside the
power good window.
Pin 20:
(GND)
Analog GND. Return of the analog signals and bias of
the chip.
e
c
e
D
)
1
(
e
g
a
k
c
a
P
R
T
S
T
7
7
6
2
C
S
0
2
-
P
O
S
S
T
T
R
T
S
T
7
7
6
2
C
S
)
2
(
0
2
-
P
O
S
S
T
1
-
B
V
E
7
7
6
2
C
S
d
r
a
o
B
n
o
a
u
v
E
e
r
a
h
S
t
e
r
C
2
-
B
V
E
7
7
6
2
C
S
d
r
a
o
B
n
o
a
u
v
E
l
n
n
a
h
C
l
u
D
Notes:
(1) Only available in tape and reel packaging. A reel con-
tains 2500 devices.
(2) Lead free package.
Pin Descriptions
Top View
(TSSOP-20 Pin)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SC2688 | Programmable Synchronous DC/DC Converter, Dual LDO Controller |
| SC2688STR | Programmable Synchronous DC/DC Converter, Dual LDO Controller |
| SC2738 | Ultra Low Output Voltage Dual Linear FET Controller |
| SC2738IMSTRT | Ultra Low Output Voltage Dual Linear FET Controller |
| SC2982 | 50mA Ultra Low Dropout,Low Noise Micropower linear Regulator(50mA 極低壓差,低噪聲,微功耗,線性穩(wěn)壓器(固定輸出電壓1.8/2.5/2.8/3.0/3.6/3.8/4.0/5.0V)) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SC2688 | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:Programmable Synchronous DC/DC Converter, Dual LDO Controller |
| SC2688STR | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:Programmable Synchronous DC/DC Converter, Dual LDO Controller |
| SC26C198 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Octal UART with TTL compatibility at 3.3V and 5V supply voltages |
| SC26C198A1A | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Octal UART with TTL compatibility at 3.3V and 5V supply voltages |
| SC26C198C1A | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Octal UART with TTL compatibility at 3.3V and 5V supply voltages |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。