GENERAL DESCRIPTION FEATURES
SGM2019系列低功耗，低噪声，低压差CMOS线性稳压器在2.5V至5.5V的输入电压下工作。它们是低压，低功耗应用的理想选择。低接地电流使该器件对电池供电的电源系统具有吸引力。 SGM2019系列还提供超低压差，以延长便携式电子产品的电池寿命。 SGM2019系列的超低输出噪声（30μVRMS）和高PSRR将使需要安静电压源的系统（例如RF应用）受益。连接到器件BP引脚的外部噪声旁路电容器可以进一步降低噪声水平。电压预设为1.2V至5.0V范围内的电压。其他功能还包括10nA逻辑热关断保护。 低输出噪声 低压差 热过载保护 输出电流限制
高PSRR（1kHz时为74dB） 10nA逻辑控制的关断 提供多种输出电压版本
固定输出1.2V，1.5V，1.8V，2.5V，2.6V，2.8V， 2.85V，3.0V和3.3V 输出可调范围为1.2V至5.0V -40℃至+ 85℃工作温度范围 提供绿色SC70-5和SOT-23-5封装
应用： 蜂窝电话 无绳电话 PCMCIA卡 调制解调器 MP3播放器 手持仪器 掌上电脑 电子规划师
便携式/电池供电设备
PIN CONFIGURATIONS (TOP VIEW)
IN
1 2
5
OUT
ABSOLUTE MAXIMUM RATINGS
IN to GND................................................................. -0.3V to 6V
GND
Output Short-Circuit Duration ..........................................Infinite EN to GND............................................................... -0.3V to VIN OUT, BP/FB to GND................................... -0.3V to (VIN + 0.3V)
Power Dissipation, PD @ TA = 25℃
SOT-23-5.............................................................................0.4W SC70-5 ...............................................................................0.3W Package Thermal Resistance
SOT-23-5, θJA................................................................260℃/W SC70-5, θ
JA....................................................................330℃/W
EN
3 4
BP/FB
SOT-23-5/SC70-5
NOTES:
1. The location of pin 1 on the YJxx is determined by orienting the package marking as shown.
2. “xx” is the output voltage code. (For Example: when the output voltage is 1.8V, it is expressed as 18.)
Operating Temperature Range............................-40℃ to +85℃ Junction Temperature........................................................ 150℃ Storage Temperature Range..............................-65℃ to +150℃ Lead Temperature (Soldering, 10s)...................................260℃ ESD Susceptibility
HBM................................................................................. 4000V MM..................................................................................... 400V
CAUTION
如果您不注意ESD保护，则该集成电路可能会被ESD损坏。
SGMICRO建议在处理所有集成电路时要采取适当的预防措施。不遵NOTE:
守正确的处理方法和安装程序可能会造成损坏。 ESD损坏的范围可超出“绝对最大额定值”中列出的压力可能会导致设备永久损能从轻微的性能下降到完全的设备故障。 精密集成电路可能更容易坏。 这些只是压力额定值，并不暗示在这些条件或超出规格操作受到损坏，因为很小的参数变化可能会导致该器件不符合其公布的部分指示的任何其他条件下设备的功能运行，长时间暴露在绝对规格。 SGMICRO保留在必要时随时更改电路设计，规格或其他相关最大额定条件下可能会影响设备的可靠性。 内容的权利，恕不另行通知。 请联系SGMICRO销售办事处以获取最新数据表。
PIN DESCRIPTION
PIN
SC70-5/SOT-23-5
1 2 3
BP
4
FB
5
OUT
Adjustable Voltage Version Only. This is used to set the output voltage of the device. Regulator Output.
NAME IN GND EN
FUNCTION
Regulator Input. Supply voltage can range from 2.5V to 5.5V. Bypass with a 1μF capacitor to GND. Ground.
Shutdown Input. A logic low reduces the supply current to 10nA. Connect to IN for normal operation.
Reference-Noise Bypass (fixed voltage version only). Bypass with a low-leakage 0.01μF ceramic capacitor for reduced noise at the output.
ELECTRICAL CHARACTERISTICS
(1), Full = -40℃ to +85℃, unless otherwise noted.) (VIN = VOUT (NOMINAL) + 0.5V
.
TYPICAL APPLICATION CIRCUIT
INPUT 2.5V to 5.5V
IN
CIN 1μF
ON
OFF
OUT
OUTPUT
SGM2019
EN
BP
COUT
1μF
CBP 0.01μF
GND
Shutdown Exit Delay (μs)
CBP (nF)
ILOAD = 50mA
None 0.001 0.01 0.1 1 10 100
21.5 21.5 22 22.5 25 30 265
ILOAD = 150mA
21.5 21.5 22.5 23 27 35 280
ILOAD = 300mA
21 22 22.5 23 28.5 39 300
ILOAD = 50mA
71.1 71.1 71.6 71.7 72.1 74.3 77.0
VOUT = 2.8V, VIN = 3.3V, EN = 0V to 2V
PSRR (dB) at 217Hz VOUT = 2.8V, VIN = VOUT + 1V ILOAD = 150mA
64.4 64.6 64.7 64.8 65.2 68.8 73.7
ILOAD = 300mA
55.0 55.1 55.2 55.4 55.9 59.6 63.1
TYPICAL APPLICATION CIRCUIT
INPUT 2.5V to 5.5V
IN
CIN 1μF
ON
OFF
EN
GND
FB
R2
OUT
OUTPUT
SGM 2019-ADJ
R1
COUT
1μF
Standard 1% Resistor Values for Common Output Voltages of Adjustable Voltage Version
VOUT (V) 1.2 1.5 1.8 2.8 3.0 3.3 3.6 4.2
NOTE: VOUT = (R1 + R2)/ R2 × 1.207
R1 (kΩ)
0 10.5 34 84.5 63.4 73.2 84.5 105
R2 (kΩ) 63.4 42.2 63.4 63.4 42.2 42.2 42.2 42.2
TYPICAL PERFORMANCE CHARACTERISTICS
VIN = VOUT (NOMINAL) + 0.5V or 2.5V (whichever is greater), CIN = 1μF, COUT = 1μF, CBP = 0.01μF, TA = +25℃, unless otherwise noted.
TYPICAL PERFORMANCE CHARACTERISTICS
VIN = VOUT (NOMINAL) + 0.5V or 2.5V (whichever is greater), CIN = 1μF, COUT = 1μF, CBP = 0.01μF, TA = +25℃, unless otherwise noted.
Power-Supply Rejection Ratio vs. Frequency 100
80
COUT = 10μF
Power-Supply Rejection Ratio vs. Frequency 100 80
COUT = 10μF
60
CBP = 0.1μF I = 50mA 40 LOAD
VIN = VOUT + 1V
VOUT = 1.8V 20 0.01
0.1
1
COUT = 1μF
60
CBP = 0.1μF I= 50mA 40 LOAD
VIN = VOUT + 1V
VOUT = 2.8V
0.1
1
COUT = 1μF
10 100 1000
20 0.01
10 100 1000
Frequency (kHz)
800 700 600 500 400 300
SGM2019-1.8YN5G
200
-40
200
-15
10
35
60
85
-40
-15
Temperature (℃) Current Limit vs. Temperature
800 700 600 500 400 300
Frequency (kHz)
Current Limit vs. Temperature
SGM2019-2.8YN5G
10 35 Temperature (℃)
60
85
Output Voltage vs. Load Current Output Voltage vs. Load Current
2
3
1.9
2.9
1.8 1.7 1.6
2.8 2.7 2.6
SGM2019-1.8YN5G
1.5
2.5
0
50
100
SGM2019-2.8YN5G
150 200 250 300
0 50 100
150 200 250 300
Load Current (mA)
Load Current (mA)
7
TYPICAL PERFORMANCE CHARACTERISTICS
VIN = VOUT (NOMINAL) + 0.5V or 2.5V (whichever is greater), CIN = 1μF, COUT = 1μF, CBP = 0.01μF, TA = +25℃, unless otherwise noted.
Ground Pin Current vs.Temperature
Ground Pin Current vs.Temperature
140 120 100 80 60
SGM2019-1.8YN5G
40 -40
-15
10
35
60
85
No Load
140
No Load 120 100 80 60
SGM2019-2.8YN5G
40 -40
-15
10 35 60 Temperature (℃)
85
Temperature (℃)
Ground Pin Current vs. Load Current
200 180 160 140 120 100 80 60
0
50
100 150 200 Load Current (mA)
250
300
SGM2019-1.8YN5G
60 0 200 180 160 140 120 100 80
Ground Pin Current vs. Load Current
SGM2019-2.8YN5G
50
100 150 200 Load Current (mA)
250
300
0.6 0.4 0.2 0 -0.2 -0.4
Output Voltage Accuracy vs. Temperature
0.6 0.4 0.2 0 -0.2 -0.4
SGM2019-1.8YN5G
Output Voltage Accuracy vs. Temperature
SGM2019-2.8YN5G
-0.6
-40
-0.6
-40
-15
10 35 Temperature (℃)
60 85 -15
10 35 Temperature (℃)
60 85
TYPICAL PERFORMANCE CHARACTERISTICS
VIN = VOUT (NOMINAL) + 0.5V or 2.5V (whichever is greater), CIN = 1μF, COUT = 1μF, CBP = 0.01μF, TA = +25℃, unless otherwise noted.
Ground Pin Current vs.Input Voltage Ground Pin Current vs.Input Voltage
120
120
No Load
100 80
80
60
60
40
40
20
20
SGM2019-1.8YN5G
SGM2019-2.8YN5G
0
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 Input Voltage (V)
0
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5
Input Voltage (V) 100
No Load
Output Voltage vs. Input Voltage Output Voltage vs. Input Voltage
2
No Load
1.6 1.2 0.8 0.4
SGM2019-1.8YN5G
0
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5
Input Voltage (V)
4
No Load 3.2 2.4 1.6 0.8
SGM2019-2.8YN5G
0
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5
Input Voltage (V)
Dropout Voltage vs. Load Current
400 350
300 250 200 150 100
50 0
SGM2019-2.8YN5G
TA = -40℃
TA = +85℃
TA = +25℃
0 50 100 150 200 250 300
Load Current (mA)
9
TYPICAL PERFORMANCE CHARACTERISTICS
VIN = VOUT (NOMINAL) + 0.5V or 2.5V (whichever is greater), CIN = 1μF, COUT = 1μF, CBP = 0.01μF, TA = +25℃, unless otherwise noted.
PSRR (217Hz) vs. Bypass Capacitor
Shutdown Exit Delay vs. Bypass Capacitor
400
VOUT = 2.8V 350
VIN = 3.3V 300 EN = 0V to 2V 250 200
120
ILOAD = 300mA ILOAD = 150mA I = 50mA LOAD
110 100 90 80 70
VOUT = 2.8V VIN = VOUT + 1V
ILOAD = 50mA
150
100 50 0 0.001
0.01
0.1
1
10
100
60 50
ILOAD = 300mA 40 30 0.001
0.01
0.1
ILOAD = 150mA
1 10 100
Bypass Capacitor (nF) Bypass Capacitor (nF)
10
APPLICATION NOTE
当LDO用于手持产品时，必须注意可能会损坏SGM2019的电压尖峰。在此类应用中，当充电器适配器和USB设备热插拔时，充电器接口和USB接口的VBUS引脚会产生电压尖峰。除此之外，手持产品将在没有电池的生产线上进行测试。测试工程师将通过与电池正极连接的连接器引脚供电。突然打开外部电源时，电池连接器上会产生电压尖峰。电压尖峰会非常高，并且总是超过LDO的绝对最大输入电压（6.0V）。为了获得可靠的设计，设计工程师需要清除此电压尖峰。齐纳二极管是消除此类电压尖峰的廉价且有效的解决方案。例如，BZM55B5V6是一个5.6V小封装齐纳二极管，可用于消除手机设计中的电压尖峰。原理图如下所示。
EXPANDED ORDERING INFORMATION
MODEL SGM2019-1.2 SGM2019-1.2 SGM2019-1.5 SGM2019-1.5 SGM2019-1.8 SGM2019-1.8 SGM2019-2.5 SGM2019-2.5 SGM2019-2.6 SGM2019-2.6 SGM2019-2.8 SGM2019-2.8 SGM2019-2.85 SGM2019-2.85 SGM2019-3.0 SGM2019-3.0 SGM2019-3.3 SGM2019-3.3 SGM2019-ADJ SGM2019-ADJ
VOUT (V) 1.2V 1.2V 1.5V 1.5V 1.8V 1.8V 2.5V 2.5V 2.6V 2.6V 2.8V 2.8V 2.85V 2.85V 3.0V 3.0V 3.3V 3.3V adjustable adjustable
PIN- PACKAGE SOT-23-5 SC70-5 SOT-23-5 SC70-5 SOT-23-5 SC70-5 SOT-23-5 SC70-5 SOT-23-5 SC70-5 SOT-23-5 SC70-5 SOT-23-5 SC70-5 SOT-23-5 SC70-5 SOT-23-5 SC70-5 SOT-23-5
ORDERING NUMBER
PACKAGE MARKING
YJ12 YJ12 YJ15 YJ15 YJ18 YJ18 YJ25 YJ25 YJ26 YJ26 YJ28 YJ28 YJ2J YJ2J YJ30 YJ30 YJ33 YJ33 YJAA YJAA
PACKAGE OPTION Tape and Reel, 3000 Tape and Reel, 3000 Tape and Reel, 3000 Tape and Reel, 3000 Tape and Reel, 3000 Tape and Reel, 3000 Tape and Reel, 3000 Tape and Reel, 3000 Tape and Reel, 3000 Tape and Reel, 3000 Tape and Reel, 3000 Tape and Reel, 3000 Tape and Reel, 3000 Tape and Reel, 3000 Tape and Reel, 3000 Tape and Reel, 3000 Tape and Reel, 3000 Tape and Reel, 3000 Tape and Reel, 3000 Tape and Reel, 3000
SGM2019-1.2YN5G/TR SGM2019-1.2YC5G/TR SGM2019-1.5YN5G/TR SGM2019-1.5YC5G/TR SGM2019-1.8YN5G/TR SGM2019-1.8YC5G/TR SGM2019-2.5YN5G/TR SGM2019-2.5YC5G/TR SGM2019-2.6YN5G/TR SGM2019-2.6YC5G/TR SGM2019-2.8YN5G/TR SGM2019-2.8YC5G/TR SGM2019-2.85YN5G/TR SGM2019-2.85YC5G/TR SGM2019-3.0YN5G/TR SGM2019-3.0YC5G/TR SGM2019-3.3YN5G/TR SGM2019-3.3YC5G/TR SGM2019-ADJYN5G/TR
SC70-5 SGM2019-ADJYC5G/TR
12
PACKAGE OUTLINE DIMENSIONS
SC70-5
D e1
0.65
e
E1 E
1.9
0.75
b
0.4
1.3
RECOMMENDED LAND PATTERN (Unit: mm)
L L1
A
A1
A2
θ
c
0.20
Symbol A A1 A2 b c D E E1 e e1 L L1 θ
Dimensions In Millimeters MIN MAX 0.900 0.000 0.900 0.150 0.080 2.000 1.150 2.150
0.65 TYP 1.300 BSC 0.525 REF 0.260 0°
0.460
8° 1.100 0.100 1.000 0.350 0.150 2.200 1.350 2.450
Dimensions
In Inches MIN 0.035 0.000 0.035 0.006 0.003 0.079 0.045 0.085
0.026 TYP 0.051 BSC 0.021 REF 0.010
0°
0.018
8° MAX 0.043 0.004 0.039 0.014 0.006 0.087 0.053 0.096
13
PACKAGE OUTLINE DIMENSIONS
SOT-23-5
D e1
1.90
2.59
E1
E
0.99
b
e
0.69
0.95
RECOMMENDED LAND PATTERN (Unit: mm)
L
A
A1
θ
c
A2
0.2
Symbol A A1 A2 b c D E E1 e e1 L θ
Dimensions In Millimeters MIN MAX 1.050 0.000 1.050 0.300 0.100 2.820 1.500 2.650
0.950 BSC 1.900 BSC 0.300 0°
0.600 8° 1.250 0.100 1.150 0.500 0.200 3.020 1.700 2.950
Dimensions
In Inches MIN MAX 0.041 0.000 0.041 0.012 0.004 0.111 0.059 0.104
0.037 BSC 0.075 BSC 0.012
0°
0.024
8° 0.049 0.004 0.045 0.020 0.008 0.119 0.067 0.116
14
TAPE AND REEL INFORMATION
REEL DIMENSIONS
TAPE DIMENSIONS
P2
P0
W
Q1 Q3
Q2 Q4
Q1 Q3
Q2 Q4
Q1 Q3
Q2
B0
Q4
Reel Diameter
P1 A0 K0
Width (W1)
DIRECTION OF FEED Reel
NOTE: The picture is only for reference. Please make the object as the standard.
KEY PARAMETER LIST OF TAPE AND REEL
CARTON BOX DIMENSIONS
NOTE: The picture is only for reference. Please make the object as the standard.
KEY PARAMETER LIST OF CARTON BOX
Reel Type
7″ (Option)
7″
Length (mm)
368 442
Width (mm) 227 410
Height (mm) 224 224
Pizza/Carton
8 18
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