参数资料
型号: LTC3617EUDD#PBF
厂商: Linear Technology
文件页数: 2/20页
文件大小: 0K
描述: IC REG SYNC 6A BUCK 24-QFN
标准包装: 73
应用: 转换器,DDR,DDR2,DDR3
输入电压: 2.25 V ~ 5.5 V
输出数: 1
输出电压: 可调至 0.5V
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 24-WFQFN 裸露焊盘
供应商设备封装: 24-QFN(3x5)
包装: 管件
LTC3617
ABSOLUTE MAXIMUM RATINGS
(Note 1)
PIN CONFIGURATION
PV IN , SV IN Voltages ..................................... –0.3V to 6V
SW Voltage ................................. –0.3V to (PV IN + 0.3V)
ITH, RT, SYNC Voltages .............. –0.3V to (SV IN + 0.3V)
VTTR, RUN, V FB Voltages ........... –0.3V to (SV IN + 0.3V)
VDDQIN, PGOOD Voltages ........................... –0.3V to 6V
Operating Junction Temperature Range
(Notes 2, 8) ............................................ –40°C to 125°C
Storage Temperature .............................. –65°C to 150°C
RT 1
SGND 2
VTTR 3
PV IN 4
SW 5
TOP VIEW
24 23 22 21
25
PGND
20 SYNC
19 RUN
18 SV IN
17 PV IN
16 SW
SW 6
SW 7
SW 8
9
10 11 12
15 SW
14 SW
13 SW
UDD PACKAGE
24-LEAD (3mm × 5mm) PLASTIC QFN
T JMAX = 125°C, θ JA = 43°C/W
EXPOSED PAD (PIN 25) IS PGND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH
LTC3617EUDD#PBF
LTC3617IUDD#PBF
TAPE AND REEL
LTC3617EUDD#TRPBF
LTC3617IUDD#TRPBF
PART MARKING*
LFXC
LFXC
PACKAGE DESCRIPTION
24-Lead (3mm × 5mm) Plastic QFN
24-Lead (3mm × 5mm) Plastic QFN
TEMPERATURE RANGE
–40°C to 125°C
–40°C to 125°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
Consult LTC Marketing for information on non-standard lead based finish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating junction
temperature range, otherwise specifications are at T A = 25°C. PV IN = SV IN = 3.3V, RT = SV IN unless otherwise specified (Notes 1 , 2, 8).
SYMBOL
V IN
PARAMETER
Input Voltage Operating Range
CONDITIONS
l
MIN
2.25
TYP
MAX
5.5
UNITS
V
V UVLO
V OVLO
Undervoltage Lockout Threshold
Overvoltage Lockout Threshold
SV IN Ramping Down
SV IN Ramping Up
SV IN Ramping Up
Hysteresis
l
l
1.7
6.5
250
2.2
7
V
V
V
mV
VTTR
VTTR Output Voltage with Line and Load
Regulation
VTTR Maximum Output Current
VDDQIN = 1.5V, Load = ±10mA
l 0.49 ? VDDQIN 0.5 ? VDDQIN 0.51 ? VDDQIN
±10
V
mA
V FB
I FB
Feedback Voltage Accuracy
Feedback Input Current
VDDQIN = 1.5V (Note 3)
V FB = 0.75V
l
l
VTTR – 10
VTTR
VTTR + 10
±30
mV
nA
3617fa
2
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