参数资料
型号: LTC3734EUH#TR
厂商: Linear Technology
文件页数: 2/28页
文件大小: 0K
描述: IC CTRLR DC/DC 1PH HI EFF 32QFN
标准包装: 2,500
应用: 控制器,Intel 移动式 CPU
输入电压: 4 V ~ 30 V
输出数: 1
输出电压: 0.7 V ~ 1.71 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 32-WFQFN 裸露焊盘
供应商设备封装: 32-QFN 裸露焊盘(5x5)
包装: 带卷 (TR)
LTC3734
20 PGND
SGND 5
ABSOLUTEMAXIMUMRATINGS
(Note 1)
Input Supply Voltage (PV CC , SV CC ) ............. 7V to – 0.3V
Topside Driver Voltages (BOOST) .............. 38V to –0.3V
Switch Voltage (SW) ..................................... 32V to –5V
Boosted Driver Voltages (BOOST-SW) ......... 7V to –0.3V
DPRSLPVR, STP_CPUB, MCH_PG, PGOOD,
RDPRSLP, RDPSLP, RBOOT Voltages ......... 5V to –0.3V
RUN/SS, FREQSET, PSIB Voltages ..............7V to – 0.3V
VID0-VID5 Voltages ....................................5V to – 0.3V
V FB Voltage ................................................. 2V to –0.3V
V OA+ , V OA– Voltage .................................... 3.6V to –0.3V
Peak Gate Drive Current <1μs (TG, BG) ......................5A
Operating Ambient Temperature Range
(Note 2) ................................................... – 40°C to 85°C
Junction Temperature (Note 3) ............................. 125°C
Storage Temperature Range................... –65°C to 125°C
Reflow Peak Body Temperature ............................ 245°C
ORDER INFORMATION
PIN CONFIGURATION
32 31 30 29 28 27 26 25
V OA+ 1 24 TG
V OA– 2 23 SW
OAOUT 3 22 PV CC
STP_CPUB 4 21 BG
33
SENSE + 6 19 VID5
SENSE – 7 18 VID4
RDPRSLP 8 17 VID3
9 10 11 12 13 14 15 16
UH PACKAGE
32-LEAD (5mm × 5mm) PLASTIC QFN
T JMAX = 125°C, θ JA = 34°C/W
EXPOSED PAD (PIN 33) IS GND, MUST BE SOLDERED TO PCB
LEAD FREE FINISH
LTC3734EUH#PBF
TAPE AND REEL
LTC3734EUH#TRPBF
PART MARKING
3734
PACKAGE DESCRIPTION
32-Lead Plastic (5mm × 5mm) QFN
TEMPERATURE RANGE
–40°C to 85°C
Consult LTC Marketing for parts specified with wider operating temperature ranges.
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
temperatur e range, otherwise specifications ar e at T A = 25°C. V PVCC = V SVCC = 5V, V RUN/SS = 5 V unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Main Control Loop
Reference
Regulated Feedback Voltage
I TH Voltage = 0.5V; Measured at V FB (Note 4)
0.600
V
V SENSEMAX
Maximum Current Sense Threshold
I TH Voltage = Max; V CM = 1.7V
l
59
72
85
mV
Measured in Servo Loop, ?I TH Voltage: 1.2V to 2V
V LOADREG
V REFLNREG
V PSIB
I PSIB
Output Voltage Load Regulation
Reference Voltage Line Regulation
Forced Continuous Threshold
Forced Continuous Current
(Note 4)
Measured in Servo Loop, ?I TH Voltage: 1.2V to 0.7V l
l
V PVCC = V SVCC = 4.5V to 7V
V PSIB = 0V
0.57
0.1
–0.1
0.02
0.6
–0.5
0.5
–0.5
0.1
0.63
–1
%
%
%/V
V
μA
V OVL
Output Overvoltage Threshold
Measured with Respect to V FB = 0.6V
0.64
0.66
0.68
V
g m
Transconductance Amplifier g m
I TH = 1.2V, Sink/Source 25μA (Note 4)
l
4.5
6
7.5
mmho
g mOL
Transconductance Amplifier Gain
I TH = 1.2V, (g m ? Z L ; No Ext Load) (Note 4)
3
V/mV
V ACTIVE
Output Voltage in Active Mode
VID = 010110, I TH = 0.5V (0°C – 85°C)
VID = 010110, I TH = 0.5V (Note 2)
l
1.342
1.336
1.356
1.356
1.370
1.376
V
V
3734fa
2
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