参数资料
型号: LTC3562EUD#TRPBF
厂商: Linear Technology
文件页数: 3/20页
文件大小: 0K
描述: IC REG BUCK SYNC ADJ QUAD 20QFN
标准包装: 2,500
类型: 降压(降压)
输出类型: 可调式
输出数: 4
输出电压: 425 mV ~ 800 mV,0.6 V ~ 3.78 V
输入电压: 2.85 V ~ 5.5 V
PWM 型: 多重
频率 - 开关: 2.25MHz
电流 - 输出: 400mA,600mA
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: 20-WFQFN 裸露焊盘
包装: 带卷 (TR)
供应商设备封装: 20-QFN 裸露焊盘(3x3)
LTC3562
ELECTRICAL CHARACTERISTICS The l denotes the speci?cations which apply over the full operating
temperature range, otherwise speci?cations are at T A = 25°C, V IN = 3.8V, unless otherwise noted.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
I 2 C Port
DV CC Operating Voltage
DV CC Operating Current
DV CC = 1.8V, Serial Port Idle
l
1.5
5.5
1
V
μA
DV CC UVLO Threshold Voltage
V IL SDA, SCL (Low Level Input Voltage)
V IH SDA, SCL (High Level Input Voltage)
0.7 ? DV CC
1
0.3 ? DV CC
V
V
V
V OL SDA (Digital Output Low)
I PULLUP = 3mA
0.08
V
Serial Port Timing (Note 4)
t SCL
t BUF
t HD,STA
t SU,STA
t SU,STO
t HD,DAT(OUT)
Clock Operating Frequency
Bus Free Time Between Stop and Start Conditions
Hold Time After (Repeated) Start Condition
Repeated Start Condition Setup Time
Stop Condition Setup Time
Data Hold Time
1.3
0.6
0.6
0.6
225
400
kHz
μs
μs
μs
μs
ns
t HD,DAT(IN)
t SU,DAT
t LOW
t HIGH
t f
t r
t SP
Input Data Hold Time
Data Setup Time
Clock Low Period
Clock High Period
Clock Data Fall Time
Clock Data Rise Time
Spike Suppression Time
0
100
1.3
0.6
20
20
50
900
300
300
ns
ns
μs
μs
ns
ns
ns
BUCK DC/DC ELECTRICAL CHARACTERISTICS The l denotes the speci?cations which apply over the
full operating temperature range, otherwise speci?cations are at T A = 25°C, V IN = 3.8V, V OUTx = 1.5V, unless otherwise noted.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Regulators R600A, R400A, R600B, R400B
f OSC
1.91
2.25
2.59
MHz
Maximum Duty Cycle
LDO Mode Closed Loop R OUT
Pulse Skip Mode
LDO Mode
100
0.25
%
Ω
Regulators R600A, R600B
PMOS Switch Current Limit
Pulse Skip Mode
850
1200
1500
mA
PMOS R DS(ON)
NMOS R DS(ON)
0.38
0.38
Ω
Ω
LDO Mode Open Loop R OUT
LDO Mode
2.2
Ω
Available Output Current
SW Pull-Down in Shutdown
Forced Burst Mode
LDO, V OUT = 1.2V
Shutdown
75
50
140
2.5
mA
mA
k Ω
3562fa
3
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