AP2112K-X.XTRG1(MS)
产品手册
AP2112K-X.XTRG1(MS)
静态电流 2μA, 输出电流 600mA 低压降线性降压转换器
概述
AP2112K-X.XTRG1(MS) 系 列 是 一 组 低 压 差 (LDO)
转 换 器 ,具 有 1.2V至6V宽电压输入范围、低压差、低功耗和小型化
封装的等特性。
AP2112K-X.XTRG1(MS) 低至 2uA 低静态电流特性,特别适合用于电池供 电、长时间待机系统设备应用,能帮助降低系
统设备的待 机 功 耗 ,有 效 延 长 待 机 时 间 和 电 池 使 用 寿 命 。AP2112K-X.XTRG1(MS) 有带 EN 使能 引脚 的版 本可
选, 将 EN 脚拉 低 可进 入 关断模式,此关断模式下静态电流可降至仅10nA (典型值)。
AP2112K-X.XTRG1(MS) 系列支持输出电容采用陶瓷电容器,在 1.2V 至 6 V 的 宽 输 入 电 压 范 围 内 和 整 个 输 出 负 载 电 流
0 mA- 600mA 范围内稳定工作。
产品特性
2uA 静态电流
(无负载)
±2%输出电压精度
600mA 输出电流能力
10nA 关断电流(可选版本)
宽范围输入电压: 1.2V 至 6V
低压差: 0.32V
支持固定输出电压:1.2V, 1.8V, 2.5V, 3.0V, 3.3V
支持陶瓷电容或者钽电容
限流保护
过温保护
提供 SOT-23-5封装
(Vo=3.3V/Io=600mA 条件下)
产品用途
手持式、电池供电设备
无线通讯设备
低功耗微处理器
音频/视频设备
笔记本电脑、 掌上型电脑和 PDA
车载导航系统
产品信息
SOT-23-5
封装脚位图
AP2112K-1.2TRG1(MS)
AABS
****
AP2112K-2.8TRG1(MS)
AABU
****
AP2112K-1.8TRG1(MS)
AABT
****
AP2112K-3.0TRG1(MS)
AAAX
****
AP2112K-3.3TRG1(MS)
AAAA
****
Copyright© Msksemi Incorporated
注:****代表生产编码
www.msksemi.com
AP2112K-X.XTRG1(MS)
引脚功能描述
脚位号
名称
功能描述
2
GND
接地
5
VOUT
电源输出端口
1
VIN
电源输入端口
3
EN
使能控制
4
NC
浮空脚
AP2112
K -
X.X
TR
G1
(MS)
产品名称
品牌标识
Green
SOT-23-5
Tape & Reel
输出电压:
1.2=1.2V
1.8=1.8V
2.8=2.8V
30=3.0V
33=3.3V
订购信息
型号
输出电压
封装
最小包装
AP2112K-1.2TRG1(MS)
1.2V
SOT-23-5
3000/7‖/Tape & Reel
AP2112K-1.8TRG1(MS)
1.8V
SOT-23-5
3000/7‖/Tape & Reel
AP2112K-2.8TRG1(MS)
2.8V
SOT-23-5
3000/7‖/Tape & Reel
AP2112K-3.0TRG1(MS)
3.0V
SOT-23-5
3000/7‖/Tape & Reel
AP2112K-3.3TRG1(MS)
3.3V
SOT-23-5
3000/7‖/Tape & Reel
Copyright© Msksemi Incorporated
www.msksemi.com
AP2112K-X.XTRG1(MS)
典型应用电路
VOUT
VIN
1uF
1uF
GND
图 1:固定输出应用电路
EN
VOUT
1K
VIN
1uF
1uF
GND
图 2: 带使能脚的固定输出应用电路
EN
VOUT
1K
VIN
SNS
1uF
1uF
GND
图 3: 固定输出带使能功能和输出电压检测功能之应用电路
Copyright© Msksemi Incorporated
www.msksemi.com
AP2112K-X.XTRG1(MS)
EN
VOUT
NC
1K
R1
VIN
1uF
SNS
1uF
GND
R2
图 4: 带使能脚和输出电压检测可调电压输出应用电路
产品功能框图
Current/Thermal
Sense
EN
VREF
VOUT
(Without SNS Pin)
(Without EN Pin)
VIN
SNS
RT
RB
EN
GND
Copyright© Msksemi Incorporated
www.msksemi.com
AP2112K-X.XTRG1(MS)
最大耐压值
(Note 1)
VIN 至 GND ------------------------------------------------------------------------------------------------------------------
-0.3V to 7V
VOUT, EN 至 GND ---------------------------------------------------------------------------------------------------
-0.3V to 6V
VOUT 至 VIN -------------------------------------------------------------------------------------------------------------------
-6V to 0.3V
封装热阻 (Note 2)
θJA -------------------------------------------------------------------------------------------------------------------------
200 ℃ /W
引脚焊锡温度 (Soldering, 10 sec.) ---------------------------------------------------------------------------
260℃
结点温度 ---------------------------------------------------------------------------------------------------
150℃
存储温度范围 ---------------------------------------------------------------------------------------
-60 o C to 150 o C
ESD 静电
HBM ------------------------------------------------------------------------------------------------------------------------------
2KV
MM -------------------------------------------------------------------------------------------------------------------------------
200V
CDM ------------------------------------------------------------------------------------------------------------------------------
2KV
建议应用条件
输入电压 VIN ---------------------------------------------------------------------------------------------------------应用结温范围 ---------------------------------------------------------------------------------------应用环温范围 -----------------------------------------------------------------------------------------
Copyright© Msksemi Incorporated
-40
1.2V to 6V
oC
to 125 o C
-40 o C to 85 o C
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AP2112K-X.XTRG1(MS)
电气特性
( VIN =5V, VEN = 5V TA=25oC 除另有说明外 )
参数
输入电压
符号
VIN
输出电压精准度
SNS 输入电流
测试条件
ILOAD =0.1mA
最小值
典型值
最大值
单位
1.2
--
6.0
V
2
%
-2
ISNS
SNS = VOUT
0.7
VDROP_3.3V
VOUT ≥ 3.3V
0.32
VDROP_3V
VOUT ≥ 3V
0.32
VDROP_2.8V
VOUT = 2.8V
0.36
VDROP_1.8V
VOUT = 1.8V
0.57
VDROP_1.2V
VOUT = 1.2V
0.8
静态电流
IQ
ILOAD = 0mA
2
关闭电流
ISD
VEN = 0V, VOUT = 0V
VIH
EN Rising
VIL
EN Falling
IEN
VEN = 5V
Dropout 电压 (ILOAD =600mA)
(Note 3)
使能电压阈值
EN 输入电流
0.01
μA
V
μA
0.5
μA
1.7
V
0.6
10
100
nA
ILOAD =30mA,
输入电压调整率
ΔLINE
1.5V ≤ VIN ≤ 5.5V or
0.2
%
0.2
%
601
1100
mA
(VOUT + 0.2V) ≤ VIN ≤ 5.5V
负载电压调整率
ΔLOAD
输出电流限流值
ILIM
电源抑制比
(ILOAD =5mA)
PSRR
输出电流噪声
10mA ≤ ILOAD ≤ 0.3A
VOUT =0V
VOUT =1.2V,
f = 100Hz
--
80
--
VIN = 2V
f = 1kHz
--
75
--
VOUT =0.9V
--
40
--
VOUT =2.8V
--
70
--
--
155
--
°C
--
15
--
°C
--
80
--
Ω
VIN = 3.5V
(BW = 10Hz to 100kHz, COUT
ILOAD =0.1A
=1μF,)
过温度关断温度
TSD
过温度关断迟滞
ΔTSD
放电电阻
RDC
dB
μVRMS
ILOAD =10mA
EN = 0V , VOUT = 0.1V
Note 1. 任何超过“最大耐压值”的应用可能会导致芯片遭受永久性损坏。这些是额定最大耐压值,仅表
示在这个范围内芯片不会损伤,但不保证所有性指标都正常,在任何超过"最大耐压值“的场合
使用,都可能导致芯片永久性损坏。在接近或等于最大耐压值情况下使用,可能会影响产品可
靠性。
Note 2. θJA 测量条件: TA = 25°C,使用 EVB 板。
Note 3. VDROP = VIN − VOUT (VOUT 达到 98%标准值)。
Copyright© Msksemi Incorporated
www.msksemi.com
AP2112K-X.XTRG1(MS)
典型电气特性
VOUT vs. Input voltage
0.81
VOUT (V)
0.805
0.8
0.795
ILOAD = 0.1mA
0.79
1
2
3
4
5
Input Voltage(V)
Ground Current vs Loading Current
Ground Current vs Input Voltage
320
3
2
1
VOUT = 0.8V
ILOAD = 0A
Ground Current (uA)
Ground Current (uA)
4
280
240
200
160
120
80
VIN = 4V
40
VOUT = 0.8V
0
0
1
2
3
VIN (V)
Copyright© Msksemi Incorporated
4
5
0
100
200
300
400
500
600
Loading Current (mA)
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AP2112K-X.XTRG1(MS)
Shutdown Ground Current vs. Temperature
0.35
SNS Input Current (μA)
VOUT = 0.8V
VIN = 5V
0.3
0.25
ISD (μA)
SNS Input Current vs. Temperature
1
0.2
0.15
0.1
0.05
0.
90.
80.
70.
60.
50.
40.
30.
VOUT = 0.8V
VIN = 5V
20.
1
0
-40
-20
0
20
40
60
80
100
120
0 -40
-20
0
Temperature (℃)
20
40
60
80
100
120
Temperature (℃)
Current Limit Response
VOUT (1V/Div)
CH1: VOUT
CH4: IOUT
ILOAD (400mA/Div)
2mS/Div
Load Transient Response I
Copyright© Msksemi Incorporated
Load Transient Response II
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AP2112K-X.XTRG1(MS)
Line Transient Response
VOUT Turn On/Off by EN
PSRR vs. Frequency
Noise Density Spectrum
Copyright© Msksemi Incorporated
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AP2112K-X.XTRG1(MS)
应用指导
输入和输出电容
可调输出电压应用
AP2112K-X.XTRG1(MS)系列产品应用,需要选择合适
AP2112K-X.XTRG1(MS)带 SNS Pin 版本可同时作为可调
的输入电容和输出电容,以确保产品应用获得稳定可靠
输出电压 LDO。图 4 是可调输出电压典型应用电路。从
的性能。使用 1uF 或者更大容值的输入电容,并将其靠近
VOUT 到 SNS 的分压电阻网络设定输出电压,输出电压值
IC 的 VIN 和 GND pin 脚摆放。输出电容可选用 1mΩ以
由 R1 和 R2 的值决定。为确保输出电压的输出精度,需
上 ESR(等效串联阻抗)
,有效容值 1uF 至 22uF 的电容
要合理选择 R1和 R2 的值,以减少 SNS 脚处输入电流的
。并将输出电容靠近IC 的 VOUT 和 GND 脚摆放。增加输
温度影响。为了满足上述要求,建议流过分压电阻器的电
出电容的容值和降低ESR 能够提升电路的 PSRR 和瞬态
流大于 50uA。可调输出电压计算公式如下:
VOUT =
响应能力。
𝑅1+𝑅2
𝑅2
×
VSNS
(1)
电流限制功能
VSNS 取决于选用的产品型号 AP2112K-X.XTRG1(MS)
AP2112K-X.XTRG1(MS)系列产品内部的电流限制器可
,VSNS 值为0.8V。由于可调输出分压电阻最小 50uA 电
持续监控及控制输出功率晶体管,将输出电流限制至
流的要求,整个降压电路的静态电流不再是 2uA。
1100mA(典型值)。限流功能确保输出可以短路至地,
器件不会损坏。
OTP (过温度保护)
Dropout 电压
当产品的结点温度超过 155°C(典型值)时,AP2112K-
AP2112K-X.XTRG1(MS)系列采用 PMOS 传输晶体管来
X.XTRG1(MS)会关闭 P-MOS 关闭输出。当结点温度往回
实现低压差。当( VIN – VOUT ) 小于 (VDROP)时,PMOS 晶
降大约 15°C 时,AP2112K-X.XTRG1(MS)会重新自动重
体管处于线性工作区域,输入至输出阻抗即为 PMOS 的
启工作。
RDS(ON) ,在此状态下,PMOS 等效于一颗电阻,VDROP 和
输出电流近似成比例。和其他线性电压转换器一样,
AP2112K-X.XTRG1(MS)系列的PSRR 和瞬态响应能力会
随着( VIN – VOUT )压差接近 VDROP 而下降。
Copyright© Msksemi Incorporated
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AP2112K-X.XTRG1(MS)
热散功率
持续工作时,IC 的结点温度不应超过其额定值。最大的
热散功率(PD)等于输出电流和 LDO 上的压降的乘积,计
热散功率取决于 IC 封装的热阻、PCB 布图、周围气流速
算公式如下:
率以及结点和环境温度的差异。最大热散功率计算如下:
PD = (VIN – VOUT) × IOUT
环温 TA=25°C, 使用 PCB,
PD ( Max ) = ( 125°C − 25°C ) / ( 200°C/W ) = 0.5W
Layout 注意事项
将输入电容、输出电容和 LDO 放置在 PCB 的同一面,并尽量将电容器靠近 IC 的输入输出脚摆放,可实现电路最佳
性能。输入电容和输出电容的接地连接必须拉回到 AP2112K-X.XTRG1(MS)的接地引脚,并使用短而粗的铺线连接
。避免使用长走线、窄走线、或者通过过孔走线,这些会增加寄生电感和电阻,导致电路性能变差,特别是在瞬态
工作条件下。
Copyright© Msksemi Incorporated
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AP2112K-X.XTRG1(MS)
Package Outline Dimensions
Symbol
Dimensions In Millimeters
Dimensions In Inches
Min.
Max.
Min.
Max.
A
1.050
1.250
0.041
0.049
A1
0.000
0.100
0.000
0.004
A2
1.050
1.150
0.041
0.045
b
0.300
0.500
0.012
0.020
c
0.100
0.200
0.004
0.008
D
2.820
3.020
0.111
0.119
E
2.650
2.950
0.104
0.116
E1
0.059
e
1.500
1.700
0.950(BSC)
0.067
0.037(BSC)
e1
1.800
2.000
0.071
0.079
L
0.300
0.600
0.012
0.024
θ
0°
8°
0°
8°
Suggested Pad Layout
Copyright© Msksemi Incorporated
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AP2112K-X.XTRG1(MS)
Attention
■ Any and all MSKSEMI Semiconductor products described or contained herein do not
handle applications that require extremely high levels of reliability, such as life-support
have specifications
that can
systems, aircraft's control systems, or
other applications whose failure can be reasonably expected to result in serious physical and/or material damage. Consult with
your MSKSEMI Semiconductor representative
nearest
you before using any MSKSEMI Semiconductor products described
or contained herein in such applications.
■ MSKSEMI Semiconductor assumes no responsibility for equipment failures that result from using products
at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in
products specificationsof any andall MSKSEMI Semiconductor products described orcontained herein.
■ Specifications of any and all MSKSEMI Semiconductor products described or contained herein stipulate the
performance, characteristics, and functions of the described products in the independent state, and are not guarantees of the
performance, characteristics, and functions of the described products as mounted in the customer’s products or equipment. To
verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test
devices mounted in the customer’sproducts orequipment.
■ MSKSEMI Semiconductor. strives to supply high-quality high-reliability products. However, any and all semiconductor
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or events cannot occur. Such measures include but are
not limited to protective circuits anderror prevention circuitsfor safedesign, redundant design, and structural design.
■ In the event that any or all MSKSEMI Semiconductor products(including technical data, services) described
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implied regarding its use or any infringementsof intellectual property rights or other rightsof third parties.
■
Any and all information described or contained herein are subject to change without notice due to
product/technology improvement, etc. Whendesigning equipment, referto the "Delivery Specification" for the MSKSEMI
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AP2112K-3.3TRG1(MS) 价格&库存
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