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| 型号： | MAX8627ETD+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/14页 |
| 文件大小： | 0K |
| 描述： | IC REG BOOST SYNC ADJ 1A 14TDFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 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： | 3 V ~ 5 V |
| 输入电压： | 0.9 V ~ 5.5 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 1MHz |
| 电流 - 输出： | 1A |
| 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： | 14-WFDFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 14-TDFN-EP（3x3） |
EVALUATION KIT AVAILABLE
MAX8627
Low V BATT , 20μA IQ, 1MHz Synchronous
Boost Converter with True Shutdown
General Description
The MAX8627 step-up converter is a high-efficiency,
low-quiescent current, synchronous boost converter
with True Shutdown? and inrush current limiting. The
MAX8627 generates any boosted output voltage from
3V to 5V from either a 2-cell NiMH/NiCd or a single-cell
Li+/Li polymer battery.
Quiescent current is only 20μA (typ), and at light loads
the converter pulses only as needed for best efficiency.
At higher loads, PWM mode maintains fixed 1MHz
operation for lowest noise and ripple.
The MAX8627 includes an internal soft-start to limit
inrush current to a maximum of 500mA. Additional fea-
tures include True Shutdown, internal compensation,
and adjustable current limit. The MAX8627 is available
in a tiny 3mm x 3mm TDFN package and is ideal for
use in handheld devices such as DSCs, PDAs, and
smartphones.
Applications
DSC Motors and Backup Power
Microprocessor/DSP Core Power
Features
o 1MHz PWM Switching Frequency
o True Shutdown Output
o Up to 95% Efficiency
o 1.0A Guaranteed Output Current
o Soft-Start Eliminates Inrush Current
o 20μA (typ) Quiescent Current
o 0.1μA Logic-Controlled Shutdown
o Internal Synchronous Rectifier
o Internal Compensation
o Adjustable Current Limit
o Low-Noise Antiringing Feature
o Tiny 14-Pin, 3mm x 3mm, TDFN Package
Ordering Information
Cellphones, PDAs, MP3 Players
Portable Handheld Devices
Visit www.maximintegrated.com/products/patents for
PART
MAX8627ETD+
PIN-
PACKAGE
14 TDFN-EP*
3mm x 3mm
PKG
CODE
T1433-2
TOP
MARK
AAQ
product patent marking information.
True Shutdown is a trademark of Maxim Integrated Products, Inc.
Typical Operating Circuit
Note: The device operates in the -40 ° C to +85 ° C extended oper-
ating temperature range.
*EP = Exposed pad.
+Denotes lead-free package.
Pin Configuration
INPUT BATTERY
2.5V TO 4.2V
C1
C2
L1
TOP VIEW
14
13
12
11
10
9
8
OFF
ON
4, 5
3
BATT
ON
LX
POUT
8, 9
6,7
C3
C4
OUTPUT
3V TO 5V
UP TO 1A
12
MAX8627
AGND OUTS
14
R1
MAX8627ETD +
R4
13
ILIM
FB
2
+
R3
R2
1
2
3
4
5
6
7
1
GND
PGND
10, 11
TDFN 3mm x 3mm
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
19-3995; Rev 0; 3/06
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