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TC1303C-EH0EUNTR

器件型号:TC1303C-EH0EUNTR
器件类别:电源/电源管理    电源电路   
厂商名称:Microchip(微芯科技)
厂商官网:https://www.microchip.com
标准:  
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器件描述

0.5 A SWITCHING REGULATOR, 2400 kHz SWITCHING FREQ-MAX, PDSO10, PLASTIC, MO-187, MSOP-10

参数
参数名称属性值
是否无铅不含铅
是否Rohs认证符合
零件包装代码TSSOP
包装说明TSSOP,
针数10
Reach Compliance Codecompliant
ECCN代码EAR99
其他特性AUTOMATIC PWM TO PFM MODE
模拟集成电路 - 其他类型SWITCHING REGULATOR
控制模式CURRENT-MODE
控制技术PULSE WIDTH MODULATION
最大输入电压5.5 V
最小输入电压2.7 V
标称输入电压3.6 V
JESD-30 代码S-PDSO-G10
JESD-609代码e3
长度3 mm
湿度敏感等级1
功能数量1
端子数量10
最高工作温度85 °C
最低工作温度-40 °C
最大输出电流0.5 A
封装主体材料PLASTIC/EPOXY
封装代码TSSOP
封装形状SQUARE
封装形式SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
峰值回流温度(摄氏度)260
认证状态Not Qualified
座面最大高度1.1 mm
表面贴装YES
切换器配置BUCK
最大切换频率2400 kHz
温度等级INDUSTRIAL
端子面层Matte Tin (Sn)
端子形式GULL WING
端子节距0.5 mm
端子位置DUAL
处于峰值回流温度下的最长时间40
宽度3 mm
Base Number Matches1

文档预览

TC1303A/TC1303B/
TC1303C/TC1304
500 mA Synchronous Buck Regulator,
+ 300 mA LDO with Power-Good Output
Features
• Dual-Output Regulator (500 mA Buck Regulator
and 300 mA Low-Dropout Regulator)
• Power-Good Output with 300 ms Delay
• Total Device Quiescent Current = 65 µA, Typical
• Independent Shutdown for Buck and LDO
Outputs (TC1303)
• Both Outputs Internally Compensated
• Synchronous Buck Regulator:
- Over 90% Typical Efficiency
- 2.0 MHz Fixed-Frequency PWM
(Heavy Load)
- Low Output Noise
- Automatic PWM to PFM mode transition
- Adjustable (0.8V to 4.5V) and Standard
Fixed-Output Voltages (0.8V, 1.2V, 1.5V,
1.8V, 2.5V, 3.3V)
• Low-Dropout Regulator:
- Low-Dropout Voltage = 137 mV Typical @
200 mA
- Standard Fixed-Output Voltages
(1.5V, 1.8V, 2.5V, 3.3V)
• Power-Good Function:
- Monitors Buck Output Function (TC1303A)
- Monitors LDO Output Function (TC1303B)
- Monitors Both Buck and LDO Output
Functions (TC1303C
and TC1304)
- 300 ms Delay Used for Processor Reset
• Sequenced Startup and Shutdown (TC1304)
• Small 10-pin 3x3 DFN or MSOP Package Options
• Operating Junction Temperature Range:
- -40°C to +125°C
• Undervoltage Lockout (UVLO)
• Output Short Circuit Protection
• Overtemperature Protection
Description
The
TC1303/TC1304
combines
a
500 mA
synchronous buck regulator and 300 mA Low-Dropout
Regulator (LDO) with a power-good monitor to provide
a highly integrated solution for devices that require
multiple supply voltages. The unique combination of an
integrated buck switching regulator and low-dropout
linear regulator provides the lowest system cost for
dual-output voltage applications that require one lower
processor core voltage and one higher bias voltage.
The 500 mA synchronous buck regulator switches at a
fixed frequency of 2.0 MHz when the load is heavy,
providing a low noise, small-size solution. When the
load on the buck output is reduced to light levels, it
changes operation to a Pulse Frequency Modulation
(PFM) mode to minimize quiescent current draw from
the battery. No intervention is necessary for smooth
transition from one mode to another.
The LDO provides a 300 mA auxiliary output that
requires a single 1 µF ceramic output capacitor,
minimizing board area and cost. The typical dropout
voltage for the LDO output is 137 mV for a 200 mA
load.
For the TC1303/TC1304, the power-good output is
based on the regulation of the buck regulator output, the
LDO output or the combination of both. The TC1304
features start-up and shutdown output sequencing.
The TC1303/TC1304 is available in either the 10-pin
DFN or MSOP package.
Additional protection features include: UVLO,
overtemperature and overcurrent protection on both
outputs.
For a complete listing of TC1303/TC1304 standard
parts, consult your Microchip representative.
Applications
Cellular Phones
Portable Computers
USB-Powered Devices
Handheld Medical Instruments
Organizers and PDAs
©
2008 Microchip Technology Inc.
DS21949C-page 1
TC1303A/TC1303B/TC1303C/TC1304
Package Types
TC1303A,B,C
10-Lead DFN
SHDN2 1
V
IN2
2
V
OUT2
3
PG 4
A
GND
5
EP
11
10 P
GND
9 L
X
8 V
IN1
7 SHDN1
6 V
FB1
/V
OUT1
SHDN2 1
V
IN2
2
V
OUT2
3
PG 4
A
GND
5
10-Lead MSOP
10 P
GND
9 LX
8
VIN1
7 SHDN1
6 V
FB1
/V
OUT1
TC1304
10-Lead DFN
SHDN 1
V
IN2
2
V
OUT2
3
PG 4
A
GND
5
EP
11
10 P
GND
9 L
X
8 V
IN1
7 A
GND
6 V
FB1
/V
OUT1
SHDN 1
V
IN2
2
V
OUT2
3
PG 4
A
GND
5
10-Lead MSOP
10 P
GND
9 L
X
8
7
V
IN1
A
GND
6 V
FB1
/V
OUT1
DS21949C-page 2
©
2008 Microchip Technology Inc.
TC1303A/TC1303B/TC1303C/TC1304
Functional Block Diagram – TC1303
V
REF
Undervoltage Lockout
(UVLO)
UVLO
Synchronous Buck Regulator
V
IN1
PDRV
L
X
SHDN1
Control
Driver
NDRV
P
GND
P
GND
V
OUT1
/V
FB1
V
IN2
P
GND
A
GND
Sense Switcher for A,C
PG
TC1303A
(1)
,B
(2)
,C
(1)
options
PG Generator with Delay
V
REF
Sense LDO for B,C
UVLO
V
OUT2
LDO
SHDN2
A
GND
Note 1:
PG open-drain for A,C options
2:
PG push-pull output for B option
©
2008 Microchip Technology Inc.
DS21949C-page 3
TC1303A/TC1303B/TC1303C/TC1304
Functional Block Diagram – TC1304
V
REF
Undervoltage Lockout
(UVLO)
UVLO
Synchronous Buck Regulator
V
IN1
PDRV
L
X
SHDN
Control
Driver
NDRV
P
GND
P
GND
V
OUT1
/V
FB1
V
IN2
P
GND
A
GND
PG
Output Voltage
Sequencer ckt.
TC1304
(Note)
PG Generator with Delay
A
GND
V
REF
UVLO
V
OUT2
LDO
A
GND
Note:
PG open-drain for TC1304
DS21949C-page 4
©
2008 Microchip Technology Inc.
TC1303A/TC1303B/TC1303C/TC1304
Typical Application Circuits
TC1303A
Fixed-Output Application
10-Lead MSOP
V
IN
2.7V to 4.2V
4.7
μF
4.7
μH
8
2
7
1
R
PULLUP
Processor
RESET
4
V
IN1
V
IN2
SHDN1
SHDN2
PG
L
X
V
OUT1
V
OUT2
A
GND
9
4.7
μF
P
GND
10
6
3
5
1
μF
V
OUT2
2.5V @ 300 mA
V
OUT1
1.5V @ 500 mA
TC1303B
Adjustable-Output Application
10-Lead DFN
Input
Voltage
4.5V to 5.5V
*Optional
Capacitor
V
IN2
1.0
μF
V
IN1
4.7
μF
V
IN2
SHDN1
SHDN2
PG
Processor
RESET
8
2
7
1
4
EP
11
9
10
6
3
L
X
P
GND
V
OUT1
V
OUT2
1
Μ
F
4.7
μH
4.7
Μ
F
200 kΩ
V
OUT2
3.3V @
300 mA
4.99 kΩ
33 pF
121 kΩ
V
OUT1
2.1V @
500 mA
5 A
GND
(Note)
Note:
Connect DFN package exposed pad to A
GND
.
TC1304
Fixed-Output Application
10-Lead MSOP
V
IN
2.7V to 4.2V
4.7
μF
4.7
μH
8
2
7
1
R
PULLUP
Processor
RESET
4
V
IN1
V
IN2
A
GND
SHDN
PG
L
X
V
OUT1
V
OUT2
A
GND
9
4.7
Μ
F
P
GND
10
6
3
5
1
μF
V
OUT2
2.5V @ 300 mA
V
OUT1
1.2V @ 500 mA
©
2008 Microchip Technology Inc.
DS21949C-page 5
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