参数资料
型号: LTC3520EUF#PBF
厂商: Linear Technology
文件页数: 2/24页
文件大小: 0K
描述: IC REG BUCK BOOST SYNC ADJ 24QFN
标准包装: 91
类型: 降压(降压),升压(升压)
输出类型: 可调式
输出数: 2
输出电压: 0.8 V ~ 5.5 V
输入电压: 2.2 V ~ 5.5 V
PWM 型: 电流模式,混合
频率 - 开关: 100kHz ~ 2MHz
电流 - 输出: 600mA,1A
同步整流器:
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 24-WFQFN 裸露焊盘
包装: 管件
供应商设备封装: 24-QFN 裸露焊盘(4x4)
产品目录页面: 1334 (CN2011-ZH PDF)
LTC3520
ABSOLUTE MAXIMUM RATINGS
(Note 1)
PV IN1 , PV IN2 , PV IN3 , SV IN Voltage................ –0.3V to 6V
SW1A, SW1B, SW2 Voltage
DC............................................................ –0.3V to 6V
PIN CONFIGURATION
TOP VIEW
24 23 22 21 20 19
Pulsed <100ns ............................................ –1V to 7V
Voltage, All Other Pins ................................. –0.3V to 6V
SV IN 1
A OUT 2
18 FB1
17 SS1
Operating Junction Temperature Range
(Note 2).................................................. –40°C to 125°C
Maximum Junction Temperature (Note 5) ............ 125°C
Storage Temperature Range .................. –65°C to 150°C
A IN 3
R T 4
PWM1 5
SD1 6
7
8
25
9 10 11 12
16 SGND
15 V C1
14 FB2
13 SS2
UF PACKAGE
24-LEAD (4mm
4mm) PLASTIC QFN
T JMAX = 125°C, θ JA = 37°C/W
EXPOSED PAD (PIN 25) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH
LTC3520EUF#PBF
LTC3520IUF#PBF
TAPE AND REEL
LTC3520EUF#TRPBF
LTC3520IUF#TRPBF
PART MARKING*
3520
3520
PACKAGE DESCRIPTION
24-Lead (4mm × 4mm) Plastic QFN
24-Lead (4mm × 4mm) Plastic QFN
TEMPERATURE RANGE
–40°C to 85°C
–40°C to 125°C
Consult LTC Marketing for parts speci?ed with wider operating temperature ranges. *The temperature grade is identi?ed by a label on the shipping container.
Consult LTC Marketing for information on non-standard lead based ?nish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel speci?cations, go to: http://www.linear.com/tapeandreel/
ELECTRICAL CHARACTERISTICS The l denotes the speci?cations which apply over the full operating
junction temperature range, otherwise speci?cations are at T A = 25°C, S VIN = P VIN1 = P VIN2 = P VIN3 = 3.6V, V OUT1 = 3.3V, R T = 54.9k,
unless otherwise noted.
PARAMETER
Input Voltage
Quiescent Current in Shutdown
Undervoltage Lockout
Burst Mode Quiescent Current, Both Converters
CONDITIONS
V SD1 = V SD2 = V SD3 = 0V
LTC3520E
LTC3520I
SV IN Rising
V FB1 = V FB2 = 0.88V, V SD3 = 0V
l
l
l
MIN
2.2
TYP
0.01
0.5
2
55
MAX
5.5
1
4
2.2
UNITS
V
μA
μA
V
μA
Oscillator Frequency
R T = 54.9k
l
0.8
1
1.2
MHz
Buck Converter
PMOS Switch Resistance
NMOS Switch Resistance
0.32
0.18
Ω
Ω
NMOS Switch Leakage
PMOS Switch Leakage
V SW2 = 5V, S VIN = P VIN1 = P VIN2 = P VIN3 = 5V
V SW2 = 0V, S VIN = P VIN1 = P VIN2 = P VIN3 = 5V
0.1
0.1
5
10
μA
μA
3520fa
2
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