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参数资料
| 型号： | LTC3828 |
| 厂商： | Linear Technology Corporation |
| 英文描述： | 16-Bit Bus Transceiver With 3-State Outputs 48-SSOP -40 to 85 |
| 中文描述： | 双2相降压型跟踪控制器 |
| 文件页数： | 4/32页 |
| 文件大小： | 396K |
| 代理商： | LTC3828 |
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4
LTC3828
3828f
OUTPUT CURRENT (A)
0.001
E
10
3828 G01
0.01
0.1
1
OUTPUT CURRENT (A)
0.001
10
0.01
0.1
1
100
90
80
70
60
50
40
30
20
10
0
E
3828 G02
100
90
80
70
60
50
INPUT VOLTAGE (V
5
E
100
90
80
70
60
50
25
3828 G03
10
15
20
30
TEMPERATURE (
°
C)
–50
3.8
3.6
3.4
3.2
3.0
100
3828 G06
–25
0
25
50
75
125
U
I
C
3828 G05
INPUT VOLTAGE (V)
0
S
μ
A
1200
1000
800
600
400
200
0
5.2
5.0
4.8
4.6
4.4
4.2
4.0
5
10
15
20
3828 G04
25
30
INPUT VOLTAGE (V)
0
5
10
15
20
25
30
Burst Mode
OPERATION
FORCED
CONTINUOUS
MODE
CONSTANT
FREQUENCY
(BURST DISABLE)
V
= 5V
F = 260kHz
V
IN
=15V
V
= 5V
F = 260kHz
V
OUT
= 5V
I
= 3A
F = 260kHz
V
IN
= 7V
V
IN
= 20V
V
IN
= 15V
BOTH CONTROLLERS ON
SHUTDOWN
I
LOAD
= 1mA
Note 1:
Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2:
T
J
is calculated from the ambient temperature T
A
and power
dissipation P
D
according to the following formulas:
LTC3828UH: T
J
= T
A
+ (P
D
34
°
C/W)
LTC3828G: T
J
= T
A
+ (P
D
95
°
C/W)
Note 3:
The IC is tested in a feedback loop that servos V
ITH1, 2
to a
specified voltage and measures the resultant V
OSENSE1, 2.
Note 4:
Dynamic supply current is higher due to the gate charge being
delivered at the switching frequency. See Applications Information.
Note 5:
Rise and fall times are measured using 10% and 90% levels. Delay
times are measured using 50% levels.
Note 6:
The minimum on-time condition is specified for an inductor
peak-to-peak ripple current
≥
40% of I
MAX
(see minimum on-time
considerations in the Applications Information section).
Note 7:
The LTC3828E is guaranteed to meet performance specifications
over the –40
°
C to 85
°
C operating temperature range as assured by design,
characterization and correlation with statistical process controls.
Efficiency vs Output Current
and Mode (Figure 14)
Efficiency vs Output Current
(Figure 14)
Efficiency vs Input Voltage
(Figure 14)
TYPICAL PERFOR U
ELECTRICAL CHARACTERISTICS
Internal 5V LDO Line Regulation
Undervoltage Lockout vs
Temperature
Supply Current vs Input Voltage
(Figure 14)
T
A
= 25
°
C unless otherwise noted.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC3828EG#PBF | 功能描述:IC REG CTRLR BUCK PWM CM 28-SSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:PolyPhase® 标准包装:2,000 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:1MHz 占空比:50% 电源电压:9 V ~ 10 V 降压:无 升压:是 回扫:是 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 85°C 封装/外壳:8-TSSOP（0.173"，4.40mm 宽） 包装:带卷 (TR) |
| LTC3828EG#TRPBF | 功能描述:IC REG CTRLR BUCK PWM CM 28-SSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:PolyPhase® 标准包装:4,500 系列:PowerWise® PWM 型:控制器 输出数:1 频率 - 最大:1MHz 占空比:95% 电源电压:2.8 V ~ 5.5 V 降压:是 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 125°C 封装/外壳:6-WDFN 裸露焊盘 包装:带卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名称:LM1771SSDX |
| LTC3828EUH | 制造商:Linear Technology 功能描述:DC DC Cntrlr Dual-OUT Sync Step Down 4.5V to 28V Input 32-Pin QFN EP |
| LTC3828EUH#PBF | 功能描述:IC REG CTRLR BUCK PWM CM 32-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:PolyPhase® 标准包装:4,500 系列:PowerWise® PWM 型:控制器 输出数:1 频率 - 最大:1MHz 占空比:95% 电源电压:2.8 V ~ 5.5 V 降压:是 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 125°C 封装/外壳:6-WDFN 裸露焊盘 包装:带卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名称:LM1771SSDX |
| LTC3828EUH#TRPBF | 功能描述:IC REG CTRLR BUCK PWM CM 32-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:PolyPhase® 标准包装:4,500 系列:PowerWise® PWM 型:控制器 输出数:1 频率 - 最大:1MHz 占空比:95% 电源电压:2.8 V ~ 5.5 V 降压:是 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 125°C 封装/外壳:6-WDFN 裸露焊盘 包装:带卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名称:LM1771SSDX |
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