数据搜索系统,热门电子元器件搜索
  Chinese  ▼
ALLDATASHEETCN.COM

X  

LTC1872B 数据表(PDF) 2 Page - Linear Technology

部件名 LTC1872B
功能描述  Constant Frequency Current Mode Step-Up DC/DC Controller in ThinSOT
Download  12 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  LINER [Linear Technology]
网页  http://www.linear.com
标志 LINER - Linear Technology

LTC1872B 数据表(HTML) 2 Page - Linear Technology

  LTC1872B Datasheet HTML 1Page - Linear Technology LTC1872B Datasheet HTML 2Page - Linear Technology LTC1872B Datasheet HTML 3Page - Linear Technology LTC1872B Datasheet HTML 4Page - Linear Technology LTC1872B Datasheet HTML 5Page - Linear Technology LTC1872B Datasheet HTML 6Page - Linear Technology LTC1872B Datasheet HTML 7Page - Linear Technology LTC1872B Datasheet HTML 8Page - Linear Technology LTC1872B Datasheet HTML 9Page - Linear Technology Next Button
Zoom Inzoom in Zoom Outzoom out
 2 / 12 page
background image
2
LTC1872B
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Input Supply Voltage (VIN).........................– 0.3V to 10V
SENSE , NGATE Voltages ............ – 0.3V to (VIN + 0.3V)
VFB, ITH/RUN Voltages ..............................–0.3V to 2.4V
NGATE Peak Output Current (< 10
µs) ....................... 1A
Storage Ambient Temperature Range ... – 65
°C to 150°C
Operating Temperature Range (Note 2) .. – 40
°C to 85°C
Junction Temperature (Note 3) ............................. 150
°C
Lead Temperature (Soldering, 10 sec).................. 300
°C
PACKAGE/ORDER INFORMATION
TJMAX = 150°C, θJA = 230°C/ W
S6 PART MARKING
ORDER PART
NUMBER
LTC1872BES6
LTXY
Consult LTC marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS The q denotes specifications that apply over the full operating temperature
range, otherwise specifications are at TA = 25°C. VIN = 4.2V unless otherwise specified. (Note 2)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Input DC Supply Current
Typicals at VIN = 4.2V (Note 4)
Normal Operation
2.4V
≤ VIN ≤ 9.8V
270
420
µA
Sleep Mode
2.4V
≤ VIN ≤ 9.8V
230
370
µA
Shutdown
2.4V
≤ VIN ≤ 9.8V, VITH/RUN = 0V
8
22
µA
UVLO
VIN < UVLO Threshold
6
10
µA
Undervoltage Lockout Threshold
VIN Falling
q
1.55
2.00
2.35
V
VIN Rising
1.85
2.10
2.40
V
Shutdown Threshold (at ITH/RUN)
q
0.15
0.35
0.55
V
Start-Up Current Source
VITH/RUN = 0V
0.25
0.5
0.85
µA
Regulated Feedback Voltage
0
°C to 70°C(Note 5)
q
0.780
0.800
0.820
V
–40
°C to 85°C(Note 5)
q
0.770
0.800
0.830
V
VFB Input Current
(Note 5)
10
50
nA
Oscillator Frequency
VFB = 0.8V
500
550
650
kHz
Gate Drive Rise Time
CLOAD = 3000pF
40
ns
Gate Drive Fall Time
CLOAD = 3000pF
40
ns
Peak Current Sense Voltage
(Note 6)
114
120
mV
ITH/RUN 1
GND 2
VFB 3
6 NGATE
5 VIN
4 SENSE
TOP VIEW
S6 PACKAGE
6-LEAD PLASTIC SOT-23
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The LTC1872BE is guaranteed to meet performance specifications
from 0
°C to 70°C. Specifications over the –40°C to 85°C operating
temperature range are assured by design, characterization and correlation
with statistical process controls.
Note 3: TJ is calculated from the ambient temperature TA and power
dissipation PD according to the following formula:
TJ = TA + (PD • θJA°C/W)
Note 4: Dynamic supply current is higher due to the gate charge being
delivered at the switching frequency.
Note 5: The LTC1872B is tested in a feedback loop that servos VFB to the
output of the error amplifier.
Note 6: Guaranteed by design at duty cycle = 30%. Peak current sense
voltage is VREF/6.67 at duty cycle <40%, and decreases as duty cycle
increases due to slope compensation as shown in Figure 3.


类似零件编号 - LTC1872B

制造商部件名数据表功能描述
logo
Linear Technology
LTC1872B LINER-LTC1872B Datasheet
204Kb / 12P
   Constant Frequency Current Mode Step-Up DC/DC Controller in ThinSOT
LTC1872B LINER-LTC1872B_15 Datasheet
204Kb / 12P
   Constant Frequency Current Mode Step-Up DC/DC Controller in ThinSOT
More results

类似说明 - LTC1872B

制造商部件名数据表功能描述
logo
Linear Technology
LTC1872B LINER-LTC1872B_15 Datasheet
204Kb / 12P
   Constant Frequency Current Mode Step-Up DC/DC Controller in ThinSOT
LTC3803 LINER-LTC3803_15 Datasheet
174Kb / 16P
   Constant Frequency Current Mode Flyback DC/DC Controller in ThinSOT
LTC3803-5 LINER-LTC3803-5 Datasheet
181Kb / 12P
   Constant Frequency Current Mode Flyback DC/DC Controller in ThinSOT
LTC3803 LINER-LTC3803 Datasheet
181Kb / 12P
   Constant Frequency Current Mode Flyback DC/DC Controller in ThinSOT
LTC3803-3 LINER-LTC3803-3_15 Datasheet
180Kb / 16P
   Constant Frequency Current Mode Flyback DC/DC Controller in ThinSOT
LTC3803-5 LINER-LTC3803-5_15 Datasheet
172Kb / 16P
   Constant Frequency Current Mode Flyback DC/DC Controller in ThinSOT
LTC3803-3 LINER-LTC3803-3 Datasheet
170Kb / 16P
   Constant Frequency Current Mode Flyback DC/DC Controller in ThinSOT
logo
Analog Devices
ADP1621 AD-ADP1621_15 Datasheet
598Kb / 32P
   Constant-Frequency, Current-Mode Step-Up DC/DC Controller
REV. B
ADP1621 AD-ADP1621 Datasheet
819Kb / 32P
   Constant-Frequency, Current-Mode Step-Up DC/DC Controller
REV. A
ADP1621 AD-ADP1621_V01 Datasheet
851Kb / 32P
   Constant-Frequency, Current-Mode Step-Up DC-to-DC Controller
Rev. D
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12


数据表 下载

Go To PDF Page


链接网址




隐私政策
ALLDATASHEETCN.COM
ALLDATASHEET是否为您带来帮助?  [ DONATE ] 

关于 Alldatasheet   |   广告服务   |   联系我们   |   隐私政策   |   链接交换   |   制造商名单
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com