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参数资料
| 型号： | LT3439EFE#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 2/12页 |
| 文件大小： | 0K |
| 描述： | IC REG PSH-PLL CTRLR ISO 16TSSOP |
| 标准包装： | 95 |
| 类型： | 推挽式控制器，隔离式 |
| 输出数： | 1 |
| 输入电压： | 2.8 V ~ 17.5 V |
| 频率 - 开关： | 20kHz ~ 250kHz |
| 电流 - 输出： | 1A |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-TSSOP（0.173"，4.40mm）裸露焊盘 |
| 包装： | 管件 |
| 供应商设备封装： | 16-TSSOP-EP |
| 产品目录页面： | 1331 (CN2011-ZH PDF) |
LT3439
ABSOLUTE
AXI U
RATI GS
PACKAGE/ORDER I FOR ATIO
(Note 1)
V IN Voltage ............................................................. 20V
TOP VIEW
ORDER PART
COL A, COL B Voltage ............................................. 35V
SHDN, SYNC Voltage .............................................. 20V
Maximum Junction Temperature ......................... 150 ° C
Operating Junction Temperature Range
(Note 2) ............................................ – 40 ° C to 125 ° C
Storage Temperature Range ................ – 65 ° C to 150 ° C
Lead Temperature (Soldering, 10 sec)................. 300 ° C
PGND
NC
COL A
R SL
SYNC
C T
R T
NC
1
2
3
4
5
6
7
8
16 PGND
15 NC
14 COL B
13 V IN
12 NC
11 SHDN
10 GND
9 NC
NUMBER
LT3439EFE
FE PART
MARKING
FE PACKAGE
16-LEAD PLASTIC TSSOP
3439EFE
T JMAX = 125 ° C, θ JA = 40 ° C/ W
NOTE: BACKSIDE OF PACKAGE CONNECTED TO GND
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS
The q denotes specifications which apply over the full operating temperature range, otherwise specifications are at T A = 25 ° C.
V IN = 5V; R T = 16.9k; C T = 680pF; R SL = 16.9k; COL A, COL B, SHDN pins open, unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Supply and Shutdown
V IN
V IN(MIN)
Operating Range
Minimum Input Voltage
q
2.8
2.55
17.5
2.7
V
V
I VIN
Supply Current
2.8V ≤ V IN ≤ 17.5V
q
12
mA
I VIN(SHDN)
Supply Current in Shutdown Mode
2.8V ≤ V IN ≤ 17.5V, V SHDN = 0V
5
20
μ A
V SHDN(ON)
Shutdown Turn-On Threshold
2.8V ≤ V IN ≤ 17.5V
q
1.3
1.4
V
V SHDN(OFF)
Shutdown Turn-Off Threshold
2.8V ≤ V IN ≤ 17.5V
q
1.20
1.26
V
I SHDN
Shutdown Pin Current Hysteresis
2.8V ≤ V IN ≤ 17.5V, V SHDN = 1.4V
q
10
20
40
μ A
Oscillator and Sync
f MAX
f SYNC
Oscillator Frequency
Synchronization Frequency Range
q
q
250
300
kHz
kHz
V SYNC
R SYNC
SYNC Pin Threshold
SYNC Pin Input Resistance
q
1.4
40
2.25
V
k ?
Output Switches (COL A, COL B)
DC
Switch Duty Cycle
q
50
%
BV
Output Switch Breakdown Voltage
2.8V ≤ V IN ≤ 17.5V
q
35
50
V
R ON
I LIM(MAX)
Output Switch On Resistance
Switch Current Limit
I COLA or I COLB = 0.75A
q
1.2
0.5
1.4
0.95
1.65
?
A
Slew Control
V SLEWR
V SLEWF
I SLEWR
I SLEWF
Output Voltage Slew Rising Edge
Output Voltage Slew Falling Edge
Output Current Slew Rising Edge
Output Current Slew Falling Edge
Collector A or B
Collector A or B
Collector A or B
Collector A or B
17
17
5
5
V/ μ s
V/ μ s
A/ μ s
A/ μ s
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The LT3439E is guaranteed to meet performance specifications
from 0 ° C to 70 ° C. Specifications over the –40 ° C to 125 ° C operating
junction temperature range are assured by design, characterization and
correlation with statistical process controls.
sn3439 3439fs
2
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