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参数资料
| 型号： | MAX1706EEE+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 9/18页 |
| 文件大小： | 0K |
| 描述： | IC REG BOOST ADJ 0.4A 16QSOP |
| 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： | 2.5 V ~ 5.5 V |
| 输入电压： | 0.7 V ~ 5.5 V |
| 频率 - 开关： | 260kHz ~ 340kHz |
| 电流 - 输出： | 400mA |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SSOP（0.154"，3.90mm 宽） |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 16-QSOP |
1- to 3-Cell, High-Current, Low-Noise,
Step-Up DC-DC Converters with Linear Regulator
Pin Description
PIN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
NAME
LBP
LBN
REF
TRACK
GND
OUT
FB
FBLDO
LDO
LBO
CLK/SEL
PGND
LX
ONB
ONA
POUT
FUNCTION
Low-Battery Comparator Noninverting Input. Common-mode range is 0.5V to 1.5V.
Low-Battery Comparator Inverting Input. Common-mode range is 0.5V to 1.5V.
1.250V Reference Output. Bypass REF with a 0.33μF capacitor to GND. REF can source up to 50μA.
Track-Mode Control Input for DC-DC Converter. In track mode, the boost-converter output is sensed at
OUT and set 0.3V above LDO to improve efficiency. Set TRACK to OUT for track mode. Connect TRACK to
GND for normal operation.
Ground
Step-Up Converter Feedback Input, Used During Track Mode. IC power and low-dropout linear-regulator
input. Bypass OUT to GND with a 0.1μF ceramic capacitor placed as close to the IC as possible.
Step-Up DC-DC Converter Feedback Input. Connect FB to a resistor voltage-divider between POUT and
GND to set the output voltage between 2.5V and 5.5V. FB regulates to 1.233V.
Low-Dropout Linear-Regulator Feedback Input. Connect FBLDO to a resistor voltage-divider between LDO
to GND to set the output voltage from 1.25V to V OUT - 0.3V (5.0V max). FBLDO regulates to 1.250V.
Low-Dropout Linear-Regulator Output. LDO sources up to 200mA. Bypass to GND with a 22μF capacitor.
Low-Battery Comparator Output. This open-drain, n-channel output is low when LBP < LBN.
Input hysteresis is 16mV.
Switching-Mode Selection and External-Clock Synchronization Input:
? CLK/SEL = low: low-power, low-quiescent-current PFM mode.
? CLK/SEL = high: low-noise, high-power PWM mode. Switches at a constant frequency (300kHz). Full
output power is available.
? CLK/SEL = driven with an external clock: low-noise, high-power synchronized PWM mode.
Synchronizes to an external clock (from 200kHz to 400kHz).
Turning on the DC-DC converter with CLK/SEL = GND also serves as a soft-start function,
since peak inductor current is reduced.
Power Ground for the Source of the n-channel power MOSFET switch
Inductor Connection to the Drains of the p-Channel Synchronous Rectifier and n-Channel Switch
Off-Control Input. When ONB = high and ONA = low, the IC is off. Connect ONB to GND for normal
operation (Table 2).
On-Control Input. When ONA = high or ONB = low, the IC turns on. Connect ONA to OUT for normal
operation (Table 2).
Boost DC-DC Converter Power Output. POUT is the source of the p-channel synchronous-rectifier MOSFET
switch. Connect an external Schottky diode from LX to POUT. The output current available from POUT is
reduced by the current drawn from the LDO linear-regulator output.
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