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参数资料
| 型号： | LTC3523EUD-2#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 5/16页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK BOOST SYNC ADJ 16QFN |
| 标准包装： | 121 |
| 类型： | 降压（降压），升压（升压） |
| 输出类型： | 可调式 |
| 输出数： | 2 |
| 输出电压： | 0.62 V ~ 5.5 V |
| 输入电压： | 1.8 V ~ 5.5 V |
| PWM 型： | 电流模式，混合 |
| 频率 - 开关： | 2.4MHz |
| 电流 - 输出： | 400mA，600mA |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-WFQFN 裸露焊盘 |
| 包装： | 管件 |
| 供应商设备封装： | 16-QFN-EP（3x3） |
LTC3523/LTC3523-2
TYPICAL PERFORMANCE CHARACTERISTICS (T A = 25°C unless otherwise noted)
1.3
1.2
Normalized R DS(ON) vs
Temperature
500
450
Step-Up No-Load Input Current
vs V IN
V OUT_BST
50mV/DIV
Mode Transition Response
1.1
1.0
PMOS
400
350
300
V OUT = 5V
V OUT_BCK
20mV/DIV
0.9
0.8
0.7
NMOS
250
200
150
100
V OUT = 3.3V
MODE
2V/DIV
V OUT1 = 3.3V
V OUT2 = 1.2V
V IN = 2.4V
200μs/DIV
3523 G12
0.6
50
V OUT = 2.8V
I OUT1 = 20mA
I OUT2 = 25mA
0.5
–45
–25
–5
15
35
55
75
0
1.5
2
2.5
3
3.5
4
4.5
5
C OUT1 = C OUT2 = 10μF
L1 = L2 = 4.7μH
TEMPERATURE (°C)
3523 G10
Maximum I OUT vs V IN for the
Step-Up Converter
INPUT VOLTAGE (V)
3523 G11
Maximum I OUT vs V IN for the
Step-Down Converter
500
450
400
V OUT = 2.5V
V OUT = 3.3V
V OUT = 5V
450
400
350
V OUT = 1.8V
V OUT = 1.2V
V OUT = 2.5V
350
300
250
200
150
100
50
300
250
200
150
100
50
0
1
2
3
4
5
0
1
1.5
2
2.5
3
3.5
4
4.5
5
INPUT VOLTAGE (V)
3523 G13
PIN FUNCTIONS
FB1 (Pin 1): Step-Up Converter Feedback Input to the Er-
ror Ampli?er. Connect resistor divider tap to this pin. The
output voltage can be adjusted from 1.8V to 5.25V by:
INPUT VOLTAGE (V)
3523 G14
PGOOD1 (Pin 3): Step-Up Converter Power Good Com-
parator Output. This open-drain output is pulled low when
V FB1 < –9% of its regulation voltage.
V OUT(STEP-UP) = 1 . 2 V ? ? 1 +
?
?
R 1 ?
R 2 ? ?
V OUT (Pin 4): Step-Up Converter Output Voltage Sense Input
and Drain of the Internal Synchronous Recti?er MOSFET.
Driver bias is derived from V OUT . PCB trace length from
See Block Diagram.
V IN1 (Pin 2): Step-Up Converter Power Voltage Input. This
V OUT to the output ?lter capacitor(s) should be as short
and wide as possible.
pin can be connected to a different supply than V IN2 . This
pin must be connected to a valid supply voltage.
3523fb
5
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC3523EUD-2-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Synchronous 600mA Step-Up and 400mA Step-Down DC/DC Converters |
| LTC3523EUD-PBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Synchronous 600mA Step-Up and 400mA Step-Down DC/DC Converters |
| LTC3523EUD-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Synchronous 600mA Step-Up and 400mA Step-Down DC/DC Converters |
| LTC3524 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Adjustable TFT Bias Supply with WLED Driver |
| LTC3524EUF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Adjustable TFT Bias Supply with WLED Driver |
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