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参数资料
| 型号： | LTC3539EDCB-2#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 6/14页 |
| 文件大小： | 0K |
| 描述： | IC REG BOOST SYNC ADJ 2A 8DFN |
| 标准包装： | 2,500 |
| 类型： | 升压（升压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 1.5 V ~ 5.25 V |
| 输入电压： | 0.5 V ~ 5 V |
| PWM 型： | 电流模式，混合 |
| 频率 - 开关： | 2MHz |
| 电流 - 输出： | 2A |
| 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： | 8-WFDFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 8-DFN（3x2） |
LTC3539/LTC3539-2
PIN FUNCTIONS
SW (Pin 1): Switch Pin. Connect inductor between SW
and V IN . Keep PCB trace lengths as short and wide as pos-
sible to reduce EMI. If the inductor current falls to zero,
or SHDN is low, an internal anti-ring resistor is connected
from SW to V IN to minimize EMI.
PGND (Pin 2), GND (Pin 3): Signal and Power Ground.
Provide a short direct PCB path between PGND, GND and
the (–) side of the input and output capacitors.
V IN (Pin 4): Battery Input Voltage. Connect a minimum of
2.2μF ceramic decoupling capacitor from this pin to ground.
SHDN (Pin 5): Logic Controlled Shutdown Input. There
is an internal 4MΩ pull-down on this pin.
SHDN = High: Normal operation.
SHDN = Low: Shutdown, quiescent current <1μA.
FB (Pin 6): Feedback Input to the g m Error Amplifier.
Connect resistor divider tap to this pin. The output volt-
age can be adjusted from 1.5V to 5.25V by: V OUT = 1.20V
? [1 + ( R2/R1)]
MODE (Pin 7): Burst Mode Pin. A logic controlled input
to select either automatic Burst Mode operation or forced
fixed frequency operation.
MODE = High: Burst Mode operation at light loads
MODE = Low: Fixed frequency PWM Mode
V OUT (Pin 8): Output Voltage Sense and Drain of the
Internal Synchronous Rectifier. PCB trace length from
V OUT to the output filter capacitor should be as short and
wide as possible.
Exposed Pad (Pin 9): The exposed pad must be soldered
to the PCB ground plane. It serves as another ground
connection, and as a means of conducting heat away
from the die.
BLOCK DIAGRAM
V IN
V OUT
1
SW
4
V IN
V BEST
V B
V SEL
WELL
SWITCH
8
V OUT
V OUT
OFF ON
5
SHDN
SHUTDOWN
SHUTDOWN
GATE DRIVERS
AND
ANTI-CROSS
CONDUCTION
I PK
COMPARATOR
Σ
I ZERO
COMPARATOR
FB
6
R2
R1
V REF
UVLO
V REF
UVLO
I PK
SLOPE
COMPARATOR
V REF
FB
PWM BURST
7
START-UP
1MHz/2MHz
OSC
CLK
LOGIC AND
BURST MODE
CONTROL
I ZERO
BURST
CLAMP
ERROR
AMPLIFIER/SLEEP
COMPARATOR
MODE
THERMAL
SHUTDOWN
TSD
WAKE
SOFT-START
9
EXPOSED PAD
2
PGND
3
GND
3539 BD
35392fb
6
For more information www.linear.com/3539/3539-2
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC3539EDCB-PBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:2A, 1MHz/2MHz Synchronous Step-Up DC/DC Converters |
| LTC3539EDCBTRMPBF | 制造商:Linear Technology 功能描述:DC-DC Converter Step-Up 0.5-5V DFN8EP |
| LTC3539EDCB-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:2A, 1MHz/2MHz Synchronous Step-Up DC/DC Converters |
| LTC3541 | 制造商:LINER 制造商全称:Linear Technology 功能描述:High Efficiency Buck + VLDO Regulator |
| LTC3541-1 | 制造商:LINER 制造商全称:Linear Technology 功能描述:High Efficiency Buck + VLDO Regulator |
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