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MAX1798

更新时间： 2024-02-16 07:09:19
品牌 Logo 应用领域
美信 - MAXIM 过程控制系统PCS蜂窝
页数 文件大小 规格书
20页 641K
描述
CDMA Cellular/PCS System Power Supplies

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MAX1798 技术参数

是否无铅：含铅是否Rohs认证：不符合
生命周期：Obsolete零件包装代码：TSSOP
包装说明：4.40 MM, MO-153, TSSOP-20针数：20
Reach Compliance Code：not_compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.73
Is Samacsys：N最大回动电压 1：0.125 V
最大回动电压 2：0.1 VJESD-30 代码：R-PDSO-G20
JESD-609代码：e0长度：6.5 mm
湿度敏感等级：1功能数量：1
输出次数：5端子数量：20
工作温度TJ-Max：150 °C最大输出电流 1：0.3 A
最大输出电流 2：0.15 A最大输出电压 1：3.3 V
最小输出电压 1：1.8 V最大输出电压 2：3.3 V
最小输出电压 2：1.8 V封装主体材料：PLASTIC/EPOXY
封装代码：TSSOP封装形状：RECTANGULAR
封装形式：SMALL OUTLINE, THIN PROFILE, SHRINK PITCH峰值回流温度（摄氏度）：240
认证状态：Not Qualified调节器类型：ADJUSTABLE POSITIVE MULTIPLE OUTPUT LDO REGULATOR
座面最大高度：1.1 mm表面贴装：YES
端子面层：Tin/Lead (Sn85Pb15)端子形式：GULL WING
端子节距：0.65 mm端子位置：DUAL
处于峰值回流温度下的最长时间：20宽度：4.4 mm
Base Number Matches：1

MAX1798 数据手册

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19-1655; Rev 1; 2/01  
CDMA Cellular/PCS System  
Power Supplies  
General Description  
Features  
The MAX1798/MAX1798A/MAX1799/MAX1799A system  
power supplies are designed specifically for CDMA cel-  
lular/PCS handsets. Each device contains five low-  
dropout linear regulators (LDOs), a 140ms (min) reset  
timer, a serial interface, push-on/push-off control logic,  
and two general-purpose open-drain outputs. Only the  
serial interface is different between the MAX1798/  
MAX1798A/MAX1799/MAX1799A: the MAX1798/  
MAX1798A feature an SPI™-compatible serial interface,  
and the MAX1799/MAX1799A feature an I2C™-compati-  
ble interface. The “A” parts have a -13% reset thresh-  
old, the non-A parts have a 9.5% threshold. The “A”  
parts have a 175 delay on a reset-triggered shutdown,  
the non-A shutdown instantly.  
Each linear regulator features extremely low dropout  
voltage, specified at two-thirds of the maximum output  
current. LDO1 is rated for 300mA, while LDOs 2–5 are  
each rated for 150mA. All LDOs are optimized for low  
noise and isolation. Each LDO can be individually  
enabled and disabled through the serial port, as well as  
individually programmed to any of 32 voltages from  
1.8V to 3.3V.  
o One 300mA Low-Noise LDO  
o Four 150mA Low-Noise LDOs  
o 45µV  
Noise from 10Hz to 100kHz  
RMS  
o >60dB Crosstalk Isolation Below 10kHz  
o >60dB PSRR Below 10kHz  
o 125mV (max) Dropout (OUT1 at 200mA)  
o 100mV (max) Dropout (OUT2–5 at 100mA)  
o Programmable Output Voltages  
1.8V to 3.3V in 32 Steps  
o 140ms (min) Reset Timer  
o SPI- or I2C-Compatible Serial Interface  
o Push-On/Push-Off Control Logic  
o Two 150mA General Purpose Open-Drain Outputs  
o Overcurrent and Thermal Protection (all LDOs)  
o 1µA Shutdown Current  
The MAX1798/MAX1798A/MAX1799/MAX1799As’ wide  
2.5V to 5.5V input voltage range makes them compati-  
ble with a wide range of input supplies, including a sin-  
gle lithium-ion (Li+) cell battery. Both devices are  
available in thermally-enhanced 20-pin TSSOP and QFN  
exposed pad (EP) packages. Evaluation kits in TSSOP  
(MAX1798EVKIT and MAX1799EVKIT) are available to  
facilitate designs.  
o 20-Pin Thermally-Enhanced TSSOP or QFN  
Packages  
Applications  
CDMA Cellular/PCS Handsets  
Typical Operating Circuit  
PDAs, Palmtops, and Handy-Terminals  
Single-Cell Li+ Systems  
IRQ  
ONO  
OFF  
IN4/5  
IN2/3  
IN1  
2- or 3-Cell NiMH, NiCd, or Alkaline Systems  
WDOUT  
2.5V  
TO 5.5V  
V
OUT1  
RSO  
CC  
Ordering Information  
RESET  
MAX1798  
MAX1798A*  
MAX1799  
TEMP  
RANGE  
PIN-  
INTER-  
FACE  
TX  
RX  
ON  
PART  
OUT2  
OUT3  
OUT4  
PACKAGE  
MAX1799A*  
-40 C to +85 C  
-40 C to +85 C  
-40 C to +85 C  
-40 C to +85 C  
MAX1798EGP  
MAX1798EUP  
MAX1798AEGP  
MAX1798AEUP  
20 QFN  
SPI  
SPI  
SPI  
SPI  
CS (AS)  
SCLK (SCK)  
DIN (SDA)  
BP  
BBA  
20 TSSOP-EP  
20 QFN  
SPI OR I2C  
AUDIO OR  
PLL + VCO  
OUT5  
V
IN1  
20 TSSOP-EP  
VIBRATOR  
DR1  
DR2  
Ordering Information continued and Pin Configurations  
appear at end of data sheet.  
0.01 F  
GND PGND  
BACKLIGHT  
SPI is a trademark of Motorola, Inc.  
( ) ARE FOR MAX1799/MAX1799A.  
*-13% RESET THRESHOLD AND SHUTDOWN RESET TIMER ADDED.  
2
I C is a trademark of Philips Corp.  
________________________________________________________________ Maxim Integrated Products  
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at  
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.  
1234567...20

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