General Description
The MAX8836Z high-frequency step-down converter is
optimized to provide a fixed output voltage with ultra-
low dropout. The device integrates a high-efficiency
PWM step-down converter for medium- and low-power
transmission, and a 60m&typical bypass FET for ultra
low-dropout operation. A 200mA low-noise, high-PSRR
low-dropout regulator (LDO) is also integrated.
Fast-switching allows the use of small ceramic input and
output capacitors while maintaining low ripple voltage.
The feedback network is integrated, further reducing
external component count and total solution size.At high
duty cycle, the MAX8836Z automatically switches to the
bypass mode, connecting the input to the output
through a low-impedance (60m& typ) MOSFET. The
LDO in the MAX8836Z is designed for low-noise opera-
tion (35礦
RMS
typ). Both the PWM step-down and LDO
are individually enabled through separate logic-control
interfaces.
The MAX8836Z is available in 16-bump, 2mm x 2mm
WLP and UCSP" packages (0.7mm max height).
Applications
WCDMA/NCDMA Cellular Handsets
Wireless PDAs
Smartphones
Features
o PA Step-Down Converter
Selectable Output Voltage (3.1V or 3.4V)
25祍 Settling Time for 3.1V to 3.4V
OUT
Change
60m&PFET at 100% Duty-Cycle for Low
Dropout
Low Output Voltage Ripple
1.2A Output Drive Capability
?% Output Voltage Accuracy
Tiny External Components
o Low-Noise LDO
Low 35礦
RMS
(typ) Output Noise
High 65dB (typ) PSRR
Guaranteed 200mA Output Current Drive
Capability
ON/OFF Control
o Low 0.1?/SPAN>A Shutdown Current
o 2.7V to 5.5V Supply Voltage Range
o Thermal Shutdown
o Tiny 2mm x 2mm x 0.7mm WLP and UCSP
Packages (4 x 4 Grid)
1.2A PWM Step-Down Converter in
2mm x 2mm WLP/UCSP for PA Power
________________________________________________________________Maxim Integrated Products 1
Ordering Information
IN
LX
PA
2.2礖
INPUT
Li+ BATTERY
HP
EN2
REFBP
SET OUTPUT
ENABLE LDO
LDO2
PA_EN
ENABLE BUCK
4.7礔
4.7礔
MAX8836Z
0.22礔
200mA
1礔
OUTPUT
3.1V OR 3.4V
GND
Typical Operating Circuit
19-4059; Rev 1; 9/08
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim's website at www.maxim-ic.com.
+Denotes a lead-free/RoHS-compliant package.
T= Tape and reel.
UCSP is a trademark of Maxim Integrated Products, Inc.
Pin Configuration appears at end of data sheet.
PART
PIN-PACKAGE TEMP RANGE
MAX ZEWEEE+T
16 WLP
(W162B2+1)
-40癈 to +85癈
MAX ZEREEE+T
16 UCSP
(R162A2+1)
-40癈 to +85癈
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相关代理商/技术参数
MAX8836ZEWEEE+
制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:
MAX8836ZEWEEE+T
制造商:Maxim Integrated Products 功能描述:
MAX883C/D
功能描述:低压差稳压器 - LDO RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20
MAX883C/D DIE
制造商:Maxim Integrated Products 功能描述:
MAX883CPA
功能描述:低压差稳压器 - LDO 5/3.3/AdjV 200mA Linear Regulator RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20
MAX883CPA+
功能描述:低压差稳压器 - LDO 5/3.3/AdjV 200mA Linear Regulator RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20
MAX883CSA
功能描述:低压差稳压器 - LDO 5/3.3/AdjV 200mA Linear Regulator RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20
MAX883CSA+
功能描述:低压差稳压器 - LDO 5/3.3/AdjV 200mA Linear Regulator RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20