参数资料
| 型号： | NCP1526MUTXG |
| 厂商： | ON Semiconductor |
| 文件页数： | 3/17页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC 1.2V .4A 10UDFN |
| 产品变化通告： | Product Discontinuation 01/Oct/2008 |
| 标准包装： | 3,000 |
| 类型： | 降压（降压） |
| 输出类型： | 固定 |
| 输出数： | 2 |
| 输出电压： | 1.2V |
| 输入电压： | 2.7 V ~ 5.5 V |
| PWM 型： | 电压模式 |
| 频率 - 开关： | 3MHz |
| 电流 - 输出： | 400mA |
| 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： | 10-UFDFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 10-UDFN（3x3） |
NCP1526
PIN FUNCTION DESCRIPTION (Pin out provided for concept purpose only and might change in the final product.)
Pin No.
1
Symbol
FB
Function
Analog Input
Description
Feedback voltage from the output of the power supply. This is the input to
the error amplifier.
2
EN1
Digital Input
Enable for DC?DC converter. This pin is active high. It is turned off by logic
LOW on this pin. Do not float this pin.
3
EN2
Digital Input
EN2 enables the LDO.A HIGH level on this pin activates the voltage
regulator. It is turned off by logic LOW on this pin. Do not float this pin.
4
GND2
Power Ground
Ground connection for the LDO section and must be connected to the
system ground.
5
BYPASS
Bypass is the bandgap reference for the LDO. This pin requires a 100 nF
bypass capacitor for low noise. This pin cannot be used for an external
source.
6
V1
Output Power
This pin provides the output voltage supplied by the LDO. This pin requires
1.0 m F decoupling capacitor.
7
VIN2
Power Input
Input battery voltage to supply voltage regulator blocks. The pin requires a
4.7 m F decoupling capacitor.
8
GND1
Power Ground
This pin is the GROUND reference for the DC?DC converter and the output
control. The pin must be connected to the system ground.
9
LX
Analog Output
Connection from Power MOSFETs to the inductor. An output discharge
circuit sinks current from this pin.
10
VIN1
Power Input
Input battery voltage to supply the analog and digital blocks of the DC?DC
converter. The pin must be decoupled to ground by a 4.7 m F ceramic
capacitor.
MAXIMUM RATINGS
Rating
Minimum Voltage All Pins
Maximum Voltage All Pins (Note 2)
Maximum Voltage EN1, EN2, FB, LX
UDFN10 Package (Note 5)
Symbol
V min
V max
V max
R q JA
Value
?0.3
7.0
VIN + 0.3
240
Unit
V
V
V
° C/W
Thermal Resistance, Junction?to?Air
Operating Ambient Temperature Range
Storage Temperature Range
Junction Operating Temperature
Latch?up Current Maximum Rating (T A = 85 ° C) (Note 4) FB pin
Latch?up Current Maximum Rating (T A = 85 ° C) (Note 4) Other pins
ESD Withstand Voltage (Note 3)
Human Body Model
Machine Model
T A
T stg
T J
Lu
Vesd
?40 to 85
?55 to 150
?40 to 125
" 70
" 100
2.0
200
_ C
_ C
_ C
mA
kV
V
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
1. Maximum electrical ratings are defined as those values beyond which damage to the device may occur at T A = 25 ° C.
2. According to JEDEC standard JESD22?A108B.
3. This device series contains ESD protection and exceeds the following tests:
Human Body Model (HBM) per JEDEC standard: JESD22?A114.
Machine Model (MM) per JEDEC standard: JESD22?A115.
4. Latchup current maximum rating per JEDEC standard: JESD78.
5. The exposed flag shall be connected to ground.
6. Moisture Sensitivity Level (MSL): 1 per IPC/JEDEC standard: J?STD?020A.
http://onsemi.com
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