参数资料
型号: LT1506IS8-3.3
厂商: Linear Technology
文件页数: 2/24页
文件大小: 0K
描述: IC REG BUCK 3.3V 4.5A 8SOIC
标准包装: 100
类型: 降压(降压)
输出类型: 固定
输出数: 1
输出电压: 3.3V
输入电压: 4 V ~ 15 V
PWM 型: 电流模式
频率 - 开关: 500kHz
电流 - 输出: 4.5A
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: 8-SOIC(0.154",3.90mm 宽)
包装: 管件
供应商设备封装: 8-SOIC
LT1506
ABSOLUTE M AXI M U M RATINGS
(Note 1)
Input Voltage .......................................................... 16V
BOOST Pin Above Input Voltage ............................. 15V
SHDN Pin Voltage ..................................................... 7V
FB Pin Voltage (Adjustable Part) ............................ 3.5V
FB Pin Current (Adjustable Part) ............................ 1mA
Sense Voltage (Fixed 3.3V Part) ............................... 5V
PACKAGE/ORDER I N FOR M ATIO N
SYNC Pin Voltage ..................................................... 7V
Operating Junction Temperature Range
LT1506C ............................................... 0 ° C to 125 ° C
LT1506I ........................................... – 40 ° C to 125 ° C
Storage Temperature Range ................ – 65 ° C to 150 ° C
Lead Temperature (Soldering, 10 sec)................. 300 ° C
FRONT VIEW
7
FB OR SENSE*
ORDER PART
NUMBER
TOP VIEW
ORDER PART
NUMBER
3
TAB
IS
GND
R PACKAGE
6
5
4
3
2
1
BOOST
V IN
GND
V SW
SYNC OR SHDN*
V C
LT1506CR
LT1506CR-3.3
LT1506CR-SYNC
LT1506CR-3.3 SYNC
V IN 1
BOOST 2
FB OR
SENSE*
GND** 4
8 V SW
7 SYNC
6 SHDN
5 V C
LT1506CS8
LT1506CS8-3.3
LT1506IS8
LT1506IS8-3.3
7-LEAD PLASTIC DD PAK
T JMAX = 125 ° C, θ JA = 30 ° C/W
WITH PACKAGE SOLDERED TO 0.5 SQUARE INCH
COPPER AREA OVER BACKSIDE GROUND PLANE OR
INTERNAL POWER PLANE. θ JA CAN VARY FROM 20 ° C/W
TO > 40 ° C/W DEPENDING ON MOUNTING TECHNIQUES
LT1506IR
LT1506IR-3.3
LT1506IR-SYNC
LT1506IR-3.3 SYNC
S8 PACKAGE
8-LEAD PLASTIC SO
θ JA = 80 ° C/ W
**WITH FUSED (GND) GROUND PIN
CONNECTED TO GROUND PLANE OR
LARGE LANDS
S8 PART MARKING
1506 1506I
150633 506I33
*Default is the adjustable output voltage device with FB pin and shutdown function. Option -3.3 replaces FB with SENSE pin for fixed 3.3V output
applications. -SYNC replaces SHDN with SYNC pin for applications requiring synchronization. Consult factory for Military grade parts.
ELECTRICAL CHARACTERISTICS
T J = 25 ° C, V IN = 5V, V C = 1.5V, Boost = V IN + 5V, switch open, unless otherwise noted.
PARAMETER
Feedback Voltage (Adjustable)
Sense Voltage (Fixed 3.3V)
CONDITIONS
All Conditions
All Conditions
q
q
MIN
2.39
2.36
3.25
3.23
TYP
2.42
3.3
MAX
2.45
2.48
3.35
3.37
UNITS
V
V
V
V
SENSE Pin Resistance
Reference Voltage Line Regulation
Feedback Input Bias Current
Error Amplifier Voltage Gain
4.3V ≤ V IN ≤ 15V
(Notes 2, 8)
q
4
200
6.6
0.01
0.5
400
9.5
0.03
2
k ?
%/ V
μ A
Error Amplifier Transconductance
? I (V C ) = ± 10 μ A (Note 8)
q
1500
1000
2000
2700
3100
μ Mho
μ Mho
V C Pin to Switch Current Transconductance
5.3
A/ V
Error Amplifier Source Current
Error Amplifier Sink Current
V FB = 2.1V or V SENSE = 2.9V
V FB = 2.7V or V SENSE = 3.7V
q
q
140
140
225
225
320
320
μ A
μ A
V C Pin Switching Threshold
V C Pin High Clamp
Duty Cycle = 0
0.9
2.1
V
V
Switch Current Limit
V C Open, V FB = 2.1V or V SENSE = 2.9V, DC ≤ 50%
q
4.5
6
8.5
A
Slope Compensation
DC = 80%
0.8
A
2
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