MAX16956(2014) 查看數據表（PDF） - Maxim Integrated
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MAX16956 Datasheet PDF : 16 Pages
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MAX16956
Pin Configuration
36V, 300mA, Mini Buck Converter with
1.1µA IQ
TOP VIEW
BST
SUP
LX
PGND
AGND
+
1
10
2
9
3 MAX16956 8
4
7
5*
6
*EXPOSED PAD
µMAX
EN
OUT/ FB
BIAS
MODE
RESET
Pin Description
PIN NAME
FUNCTION
1
BST High-Side Driver Supply. Connect a 0.1µF bootstrap capacitor between LX and BST.
2
SUP IC Supply Input. Connect a minimum of 4.7µF ceramic capacitor from SUP to PGND.
3
LX
Buck Switching Node. LX is high impedance when the device is off.
4
PGND Power Ground. Connect to AGND under the device in a star configuration.
5
AGND Analog Ground. Connect to PGND under the device in a star configuration.
6 RESET Open-Drain Reset Output. An external pullup resistor is required.
7
MODE
Mode Switch-Control Input. Connect to ground or leave open to enable skip-mode operation under light loads.
Connect to BIAS to enable forced-PWM mode. MODE has a 1MΩ internal pulldown.
8
BIAS 5V Internal Logic Supply. Connect a 1µF ceramic capacitor to AGND.
MAX16956A/B/D/E (Fixed Output): Buck Regulator Voltage-Sense Input. Bypass OUT to PGND with a
9
OUT/FB
minimum 22µF X7R ceramic capacitor.
MAX16956C/F (Adjustable Output): Feedback Input. Connect FB to a resistive divider between the buck output
and AGND to set the output voltage.
10
EN SUP Voltage-Compatible Enable Input. Drive EN low to disable the device. Drive EN high to enable the device.
—
EP
Exposed Pad. Connect EP to a large copper ground plane for effective power dissipation. Do not use EP as the
only IC ground connection. EP must be connected to PGND.
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