参数资料
型号: MAX1700EEE+T
厂商: Maxim Integrated Products
文件页数: 8/16页
文件大小: 0K
描述: IC REG BST SYNC ADJ 0.8A 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: 2.2 V ~ 5.5 V
输入电压: 0.7 V ~ 5.5 V
频率 - 开关: 300kHz
电流 - 输出: 800mA
同步整流器:
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-Cell to 3-Cell, High-Power (1A),
Low-Noise, Step-Up DC-DC Converters
Pin Description
MAX1700
PIN
MAX1701
NAME
FUNCTION
3
1
2
3
LBP
LBN
REF
Low-Battery Comparator Non-Inverting Input
Low-Battery Comparator Inverting Input
Reference Output. Bypass with a 0.22μF capacitor to GND. REF can source up to
50μA.
Switching-Mode Selection and External-Clock Synchronization Inputs.
? CLK/SEL=Low: Low-power, delivers up to 10% of full load current.
? CLK/SEL=High: High-power PWM mode. Full output power available. Operates in
4
4
CLK/SEL
low-noise, constant-frequency mode.
? CLK/SEL=External Clock: High-power PWM mode with the internal oscillator
synchronized to the external clock.
Turning on with CLK/SEL=0V also serves as a soft-start function since peak inductor
current is limited to 25% of that allowed in PWM mode.
5
7
8
5
6
7
8
9
10
GND
POK
ONB
ONA
AO
AIN
Ground
Power-Okay Comparator Output. Open drain N-channel output is low when V OUT is
10% below regulation point. No internal delay is provided.
Shutdown Input. When ONB =high and ONA=low, the IC is off and the load is connect-
ed to the battery through the Schottky diode.
Turn ON Input. When ONA=high or ONB =low, the IC turns on.
Gain Block Output. This open-drain output sinks when V AIN <V REF .
Gain Block AIN input. When AIN is low, AO sinks current. The transconductance from
AIN to AO is 9mmhos.
DC-DC Converter Dual-Mode Feedback Input. For a fixed output voltage of +3.3V,
11
11
FB
connect FB to GND. For adjustable output, connect a divider between POUT and GND
to set the output voltage in the range of 2.5V to 5V.
12
13
14
15
1, 2, 6, 9,
10, 16
12
13
14
15
16
PGND
LX
OUT
POUT
LBO
I.C.
Source of N-Channel Power MOSFET Switch. Connect to high-current ground path.
Drain of P-Channel Synchronous Rectifier and N-Channel Switch
Output Sense Input. Power source for the IC.
Source of P-Channel Synchronous Rectifier MOSFET Switch. Connect an external
Schottky diode from LX to POUT.
Low-Battery Comparator Output. Open-drain N-channel output is low when LBN > LBP
Input hysteresis is 15mV.
Internal Connection. Leave open or connect to GND.
8
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