參數(shù)資料
型號: EL7516IY-T7
廠商: INTERSIL CORP
元件分類: 穩(wěn)壓器
英文描述: 600kHz/1.2MHz PWM Step-Up Regulator
中文描述: 1.5 A SWITCHING REGULATOR, 1500 kHz SWITCHING FREQ-MAX, PDSO8
封裝: 1.10 MM HEIGHT, MO-187, MSOP-8
文件頁數(shù): 5/11頁
文件大小: 303K
代理商: EL7516IY-T7
3
FN7333.3
Block Diagram
Typical Application Circuit
COMPARATOR
OSCILLATOR
SHUTDOWN &
START-UP
CONTROL
LX
VDD
FSEL
SHDN
SS
REFERENCE
GENERATOR
PWM LOGIC
CONTROLLER
FET
DRIVER
CURRENT
SENSE
GM
AMPLIFIER
GND
FB
COMP
Pin Descriptions
PIN NUMBER
PIN NAME
DESCRIPTION
1
COMP
Compensation pin. Output of the internal error amplifier. Capacitor and resistor from COMP pin to ground.
2
FB
Voltage feedback pin. Internal reference is 1.294V nominal. Connect a resistor divider from VOUT. VOUT =
1.294V (1 + R1 / R2). See Typical Application Circuit.
3
SHDN
Shutdown control pin. Pull SHDN low to turn off the device.
4
GND
Analog and power ground.
5
LX
Power switch pin. Connected to the drain of the internal power MOSFET.
6
VDD
Analog power supply input pin.
7
FSEL
Frequency select pin. When FSEL is set low, switching frequency is set to 620kHz. When connected to
high or VDD, switching frequency is set to 1.25MHz.
8
SS
Soft-start control pin. Connect a capacitor to control the converter start-up.
1
2
3
4
8
7
6
5
COMP
FB
SHDN
GND
SS
FSEL
VDD
LX
+
3.9k
4.7nF
27nF
22F
C3
C1
0.1F
10H
D1
22F
C2
12V
2.7V TO 5.5V
R3
C5
85.2k
R1
10k
R2
C4
EL7516
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