参数资料
型号: MAX1967EUB+T
厂商: Maxim Integrated Products
文件页数: 6/15页
文件大小: 0K
描述: IC REG CTRLR BUCK PWM VM 10-UMAX
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
PWM 型: 电压模式
输出数: 1
频率 - 最大: 127kHz
占空比: 95%
电源电压: 2.7 V ~ 28 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: -40°C ~ 85°C
封装/外壳: 10-TFSOP,10-MSOP(0.118",3.00mm 宽)
包装: 带卷 (TR)
Low-Cost Voltage-Mode PWM
Step-Down Controllers
Typical Operating Characteristics (continued)
(T A = +25 ° C, unless otherwise noted.)
SHUTDOWN WAVEFORMS
NO LOAD
I OUT
V IN = 5.0V
V IN = 1.8V
L = 22 μ F
VIN
VOUT
2V/div
1V/div
INDUCTOR
CURRENT
1A/div
10ms/div
Pin Description
PIN
NAME
FUNCTION
MAX1966
MAX1967
1
2
3
4
5
6
7
8
10
1
2
3
4
5
6
7
8
9
BST
COMP/EN
FB
VCC
VIN
VL
DL
GND
LX
DH
Positive Supply of DH Driver. Connect 0.1μF ceramic capacitor between BST and LX.
Compensation Pin. Pulling COMP/EN low with an open-collector or open-drain device
turns off the output.
Feedback Input. Connect a resistive divider network to set V OUT . F B threshold is 0.8V.
Internal Chip Supply. Connect to VL via a 10 ? resistor.
Power Supply for LDO Regulator in the MAX1967 and Chip Supply for the MAX1966.
Bypass with a ceramic capacitor to ground (see application circuit).
Output of Internal 5V LDO. Bypass with a 2.2μF capacitor to GND, or if VIN < 5.5,
connect VL to VIN and bypass with a 0.1μF capacitor to GND.
Low-Side External MOSFET Gate-Driver Output. D L swings from V L to GND.
Ground and Negative Current-Sense Input
Inductor Switching Node. L X is used for both current limit and the return supply of the
D H driver.
High-Side External MOSFET Gate-Driver Output. D H swings from BST to L X .
6
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