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參數資料
| 型號： | LT1339C |
| 廠商： | Linear Technology Corporation |
| 英文描述： | Octal Buffers/Drivers With 3-State Outputs 20-SOIC 0 to 70 |
| 中文描述： | 大功率同步DC / DC控制器 |
| 文件頁數： | 1/20頁 |
| 文件大小： | 415K |
| 代理商： | LT1339C |
1
LT1339
High Power Synchronous
DC/DC Controller
DESCRIPTIO
N
U
The LT
1339 is a high power synchronous current mode
switching regulator controller. The IC drives dual
N-channel MOSFETs to create a single IC solution for high
power DC/DC converters in applications up to 60V.
The LT1339 incorporates programmable average current
limiting, allowing accurate limiting of DC load current
independent of inductor ripple current. The IC also incor-
porates user-adjustable slope compensation for minimi-
zation of magnetics at duty cycles up to 90%.
The LT1339 timing oscillator operating frequency is pro-
grammable and can be synchronized up to 150kHz. Mini-
mum off-time operation provides main switch protection.
The IC also incorporates a soft start feature that is gated by
both shutdown and undervoltage lockout conditions.
An output phase reversal pin allows flexibility in configu-
ration of converter types, including inverting and negative
topologies.
FEATURES
I
High Voltage: Operation Up to 60V
I
High Current: Dual N-Channel Synchronous Drive
Handles Up to 10,000pF Gate Capacitance
I
Programmable Average Load Current Limiting
I
5V Reference Output with 10mA External
Loading Capability
I
Programmable Fixed Frequency Synchronizable
Current Mode Operation Up to 150kHz
I
Undervoltage Lockout with Hysteresis
I
Programmable Start Inhibit for Power Supply
Sequencing and Protection
I
Adaptive Nonoverlapping Gate Drive Prevents
Shoot-Through
I
48V Telecom Power Supplies
I
Personal Computers and Peripherals
I
Distributed Power Converters
I
Industrial Control Systems
I
Lead-Acid Battery Backup Systems
I
Automotive and Heavy Equipment
APPLICATIO
S
U
TYPICAL APPLICATIO
N
U
, LTC and LT are registered trademarks of Linear Technology Corporation.
28V to 5V 20A Buck Converter
SYNC
V
BOOST
5V
REF
TG
CT
SL/ADJ
TS
12V
IN
BG
I
AVG
SS
PGND
V
C
PHASE
SGND
RUN/SHDN
SENSE
+
V
FB
V
REF
SENSE
–
DBST
IN5819
12V
C
12VIN
47
V
IN
28V
C
1500
μ
F
63V
×
3
IRL3803
IRL3103D2
×
2
L1
10
μ
H
V
5V AT 20A
R
FB2
1k
R
FB1
3k
LT1339
+
CBST
1
μ
F
+
+
C
2200
μ
F
6.3V
×
2
+
D2
MBR0520
D1
MBR0520
R
100k
R
0.005
R
CT
10k
C
2200pF
C
2200pF
C
SS
,
1
μ
F
+
C
VC
,
1nF
R
VC
, 10k
C
REF
0.1
μ
F
1339 TA03
L1 = CTX02-13400-X2
C
5VREF
1
μ
+
28V to 5V Efficiency
OUTPUT CURRENT (A)
0
E
20
1339 TA03a
5
10
15
100
90
80
70
60
50
相關PDF資料 |
PDF描述 |
|---|---|
| LT1339 | High Efficiency, Synchronous, 4-Switch Buck-Boost Controller |
| LT1339CN | Octal Buffers/Drivers With 3-State Outputs 20-SOIC 0 to 70 |
| LT1339CSW | Octal Buffers/Drivers With 3-State Outputs 20-SOIC 0 to 70 |
| LT1339I | Octal Buffers/Drivers With 3-State Outputs 20-SOIC 0 to 70 |
| LT1339IN | Octal Buffers/Drivers With 3-State Outputs 20-PDIP 0 to 70 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| LT1339CN | 功能描述:IC REG CTRLR BST PWM CM 20-DIP RoHS:否 類別:集成電路 (IC) >> PMIC - 穩壓器 - DC DC 切換控制器 系列:- 標準包裝:4,500 系列:PowerWise® PWM 型:控制器 輸出數:1 頻率 - 最大:1MHz 占空比:95% 電源電壓:2.8 V ~ 5.5 V 降壓:是 升壓:無 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 125°C 封裝/外殼:6-WDFN 裸露焊盤 包裝:帶卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名稱:LM1771SSDX |
| LT1339CN#PBF | 功能描述:IC REG CTRLR BST PWM CM 20-DIP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩壓器 - DC DC 切換控制器 系列:- 標準包裝:2,000 系列:- PWM 型:電流模式 輸出數:1 頻率 - 最大:1MHz 占空比:50% 電源電壓:9 V ~ 10 V 降壓:無 升壓:是 回掃:是 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 85°C 封裝/外殼:8-TSSOP（0.173"，4.40mm 寬） 包裝:帶卷 (TR) |
| LT1339CN#PBF | 制造商:Linear Technology 功能描述:DC-DC CONTROLLER CURRENT MODE 制造商:Linear Technology 功能描述:DC-DC CONTROLLER, CURRENT MODE, 150KHZ, |
| LT1339CSW | 功能描述:IC REG CTRLR BST PWM CM 20-SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 穩壓器 - DC DC 切換控制器 系列:- 標準包裝:4,500 系列:PowerWise® PWM 型:控制器 輸出數:1 頻率 - 最大:1MHz 占空比:95% 電源電壓:2.8 V ~ 5.5 V 降壓:是 升壓:無 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 125°C 封裝/外殼:6-WDFN 裸露焊盤 包裝:帶卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名稱:LM1771SSDX |
| LT1339CSW#PBF | 功能描述:IC REG CTRLR BST PWM CM 20-SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 穩壓器 - DC DC 切換控制器 系列:- 標準包裝:2,000 系列:- PWM 型:電流模式 輸出數:1 頻率 - 最大:1MHz 占空比:50% 電源電壓:9 V ~ 10 V 降壓:無 升壓:是 回掃:是 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 85°C 封裝/外殼:8-TSSOP（0.173"，4.40mm 寬） 包裝:帶卷 (TR) |
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