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MAX1686HEUA Datasheet

  • MAX1686HEUA

  • 3V至5V穩(wěn)壓型電荷泵，用于SIM卡

  • 8頁

  • MAXIM   MAXIM

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19-1376; Rev 1; 12/98
3V to 5V Regulating
Charge Pumps for SIM Cards
General Description
The MAX1686 provides power for dual-voltage sub-
scriber ID module (SIM) cards in portable applications
such as GSM cellular phones. Designed to reside in the
portable unit (cellular phone handset), the 1MHz charge
pump converts a 2.7V to 4.2V input to regulated 5V out-
put. The MAX1686H has a nominal output voltage of
5.0V, while the MAX1686 is set to 4.75V to reduce SIM-
card current drain. The charge pump has only 45碌A(chǔ) qui-
escent supply current, which reduces to 3碌A(chǔ) when a
3V-capable SIM card is being powered and the charge
pump is disabled. An internal input/output shorting
switch provides power for 3V SIM cards.
The MAX1686/MAX1686H require only three external
capacitors around their space-saving, thin (1mm) 8-pin
碌MAX packages.
o
2.7V to 4.2V Input Range
o
12mA min Charge-Pump Output Current
o
45碌A(chǔ) Quiescent Supply Current
o
0.1碌A(chǔ) Supply Current in Shutdown Mode
o
5.0V Regulated Charge-Pump Output (MAX1686H)
4.75V Regulated Charge-Pump Output (MAX1686)
o
Input-Output Shorting Switch for 3V Cards
o
Small External Components
(Uses a 0.047碌F, 0.1碌F, and a 2.2碌F Capacitor)
o
Output Driven to Ground in Shutdown Mode
o
Super-Small 8-Pin 碌MAX Package
o
Soft-Start and Short-Circuit Protection
Features
MAX1686/MAX1686H
Applications
GSM Cellular Phones
PCS Phones
Portable POS Terminals
Personal Communicators
PART
MAX1686EUA
MAX1686HEUA
Ordering Information
TEMP. RANGE
-40擄C to +85擄C
-40擄C to +85擄C
PIN-PACKAGE
8 碌MAX
8 碌MAX
Typical Operating Circuit
C
X
Pin Configuration
TOP VIEW
INPUT
2.7V TO 4.2V
IN
C
IN
CXN
CXP
OUT
OUTPUT
V
IN
OR 5V/20mA
C
OUT
3/5
SHDN
IN
GND
1
2
3
4
8
OUT
CXP
CXN
PGND
MAX1686
MAX1686H
SHDN
3/5
GND
PGND
MAX1686
MAX1686H
碌MAX
7
6
5
________________________________________________________________
Maxim Integrated Products
1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.

MAX1686HEUA 產(chǎn)品屬性

  • Lead (SnPb) Finish for COTSObsolescence Mitigation Program

  • 50

  • 集成電路 (IC)

  • PMIC - 穩(wěn)壓器 - 專用型

  • -

  • 充電泵，SIM 卡

  • 2.7 V ~ 4.2 V

  • 1

  • 5V

  • -40°C ~ 85°C

  • 表面貼裝

  • 8-TSSOP，8-MSOP（0.118"，3.00mm 寬）

  • 8-uMAX

  • 管件

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