参数资料
型号: LT1934IDCB-1#TRMPBF
厂商: Linear Technology
文件页数: 3/20页
文件大小: 0K
描述: IC REG BUCK ADJ 60MA 6DFN
标准包装: 500
类型: 降压(降压)
输出类型: 可调式
输出数: 1
输出电压: 1.25 V ~ 28 V
输入电压: 3.2 V ~ 34 V
PWM 型: Burst Mode?
电流 - 输出: 60mA
同步整流器:
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 6-WFDFN 裸露焊盘
包装: 带卷 (TR)
供应商设备封装: 6-DFN-EP(2x3)
LT1934/LT1934-1
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 = 10V, V BOOST = 15V, unless otherwise noted.
SYMBOL
Undervoltage Lockout
CONDITIONS
–40°C ≤ T A ≤ 85°C
–40°C ≤ T A ≤ 125°C
l
l
MIN
TYP
3
3
3
MAX
3.2
3.6
3.6
UNITS
V
V
V
Quiescent Current
V FB = 1.3V
–40°C ≤ T A ≤ 85°C
–40°C ≤ T A ≤ 125°C
l
l
12
12
12
22
26
26
μA
μA
μA
V SHDN = 0V
0.01
2
μA
FB Comparator Trip Voltage
V FB Falling
–40°C ≤ T A ≤ 85°C
–40°C ≤ T A ≤ 125°C
l
l
1.22
1.21
1.25
1.25
1.27
1.27
V
V
FB Comparator Hysteresis
10
mV
FB Pin Bias Current
V FB = 1.25V
–40°C ≤ T A ≤ 85°C
–40°C ≤ T A ≤ 125°C
l
l
2
2
±15
±60
nA
nA
FB Voltage Line Regulation
4V < V IN < 34V
0.007
%/V
Switch Off Time
V FB > 1V
1.4
1.8
2.3
μs
V FB = 0V
12
μs
Maximum Duty Cycle
V FB = 1V
–40°C ≤ T A ≤ 85°C
–40°C ≤ T A ≤ 125°C
l
l
85
83
88
88
%
%
Switch V CESAT
I SW = 300mA (LT1934, S6 Package)
I SW = 300mA (LT1934, DCB Package)
I SW = 75mA (LT1934-1, S6 Package)
I SW = 75mA (LT1934-1, DCB Package)
200
225
65
70
300
120
mV
mV
mV
mV
Switch Current Limit
BOOST Pin Current
Minimum Boost Voltage (Note 3)
LT1934
LT1934-1
I SW = 300mA (LT1934)
I SW = 75mA (LT1934-1)
I SW = 300mA (LT1934)
I SW = 75mA (LT1934-1)
350
90
400
120
8.5
6.0
1.8
1.7
490
160
12
10
2.5
2.5
mA
mA
mA
mA
V
V
Switch Leakage Current
2
μA
SHDN Pin Current
V SHDN = 2.3V
0.5
μA
V SHDN = 34V
1.5
5
μA
SHDN Input Voltage High
SHDN Input Voltage Low
2.3
0.25
V
V
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The LT1934E and LT1934E-1 are guaranteed to meet performance
operating temperature range are assured by design, characterization and
correlation with statistical process controls. The LT1934I and LT1934I-1
speci?cations are guaranteed over the –40°C to 125°C temperature range.
Note 3: This is the minimum voltage across the boost capacitor needed to
guarantee full saturation of the internal power switch.
speci?cations from 0°C to 85°C. Speci?cations over the –40°C to 85°C
1934fe
3
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