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參數資料
| 型號： | MAX8836ZEREEE+T |
| 廠商： | Maxim Integrated |
| 文件頁數： | 10/19頁 |
| 文件大?。?/td> | 414K |
| 描述： | IC REG DL BCK/LINEAR SYNC 16UCSP |
| 產品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 2,500 |
| 拓撲： | 降壓（降壓）同步（1），線性（LDO）（1） |
| 功能： | 任何功能 |
| 輸出數： | 2 |
| 頻率 - 開關： | 1.6MHz |
| 電壓/電流 - 輸出 1： | 3.4V，1.2A |
| 電壓/電流 - 輸出 2： | 2.85V，200mA |
| 帶 LED 驅動器： | 無 |
| 帶監(jiān)控器： | 無 |
| 帶序列發(fā)生器： | 無 |
| 電源電壓： | 2.7 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-SSOP（0.154"，3.90mm 寬） |
| 供應商設備封裝： | 16-QSOP |
| 包裝： | 帶卷 (TR) |
1.2A PWM Step-Down Converter in
2mm x 2mm WLP/UCSP for PA Power
10 ______________________________________________________________________________________
Thermal Shutdown
Thermal shutdown limits total power dissipation in the
MAX8836Z. If the junction temperature exceeds
+160癈, thermal-shutdown circuitry turns off the IC,
allowing it to cool. The IC turns on and begins soft-start
after the junction temperature cools by 20癈. This
results in a pulsed output during continuous thermal-
overload conditions.
Applications Information
Output Voltages
The MAX8836Z provides a fixed output voltage of 3.4V
(HP = 0), or BYPASS mode if duty cycle is higher than
99% (typ).
If HP = 1, the MAX8836Z provides a 3.1V fixed output
voltage.
The LDO2 output voltage is factory preset to 2.85V.
LDO Dropout Voltage
The regulators minimum input/output differential (or
dropout voltage) determines the lowest usable supply
voltage. In battery-powered systems, this determines
the useful end-of-life battery voltage. Because the
MAX8836Z LDO uses a p-channel MOSFET pass transis-
tor, the dropout voltage is a function of drain-to-source
on-resistance (R
DS(ON)
) multiplied by the load current
(see the Typical Operating Characteristics).
Inductor Selection
The MAX8836Z operates with a switching frequency of
1.6MHz and utilizes a 2.2礖 inductor. The switching
frequency of the MAX8836Z results in great efficiency
with a physically small inductor. See the Typical
Operating Characteristicsfor efficiency graphs.
The inductors DC current rating only needs to match the
maximum load of the application because the
MAX8836Z features zero current overshoot during start-
up and load transients. For optimum transient response
and high efficiency, choose an inductor with DC series
resistance in the 50m&to 150m&range. See Table 1 for
suggested inductors and manufacturers.
Output Capacitor Selection
For the PA step-down converter, the output capacitor
(C
PA
) is required to keep the output voltage ripple small
and ensure regulation loop stability. C
PA
must have low
impedance at the switching frequency. Ceramic capaci-
tors with X5R or X7R dielectric are highly recommended
due to their small size, low ESR, and small temperature
coefficients. Due to the unique feedback network, the
output capacitance can be very low. A 4.7礔 capacitor
is recommended for most applications. For optimum
load-transient performance and very low output ripple,
the output capacitor value can be increased.
For LDO2, the minimum output capacitance required is
dependent on the load currents. For loads less than
10mA, it is sufficient to use a 0.1礔 capacitor for stable
operation over the full temperature range. With rated
maximum load currents, a minimum of 1礔 is recom-
mended. Reduce output noise and improve load-tran-
sient response, stability, and power-supply rejection by
using larger output capacitors.
Note that some ceramic dielectrics exhibit large capaci-
tance and ESR variation with temperature. With dielectrics
such as Z5U and Y5V, it is necessary to use 2.2礔 or larg-
er to ensure stability at temperatures below -10癈. With
X7R or X5R dielectrics, 1礔 is sufficient at all operating
temperatures. These regulators are optimized for ceramic
capacitors. Tantalum capacitors are not recommended.
Input Capacitor Selection
The input capacitor (C
IN1
) of the PA converter reduces
the current peaks drawn from the battery or input
power source and reduces switching noise in the
MAX8836Z. The impedance of C
IN1
at the switching
frequency should be kept very low. Ceramic capacitors
with X5R or X7R dielectric are highly recommended
due to their small size, low ESR, and small temperature
coefficients. A 4.7礔 capacitor is recommended for
most applications. For optimum noise immunity and low
input ripple, the input capacitor value can be
increased.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| 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:低壓差穩(wěn)壓器 - LDO RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調節(jié):0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| MAX883C/D DIE | 制造商:Maxim Integrated Products 功能描述: |
| MAX883CPA | 功能描述:低壓差穩(wěn)壓器 - LDO 5/3.3/AdjV 200mA Linear Regulator RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調節(jié):0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
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