MAX16936 Datasheet, PDF (8/17 Pages) Maxim Integrated Products – 36V, 220kHz to 2.2MHz Step-Down Converter with 28μA Quiescent Current

MAX16936
36V, 220kHz to 2.2MHz Step-Down Converter
with 28µA Quiescent Current
Pin Configurations
TOP VIEW
16 15 14 13 12 11 10 9
MAX16936
EP
+
12345678
12 11 10 9
LX 13
PGND 14
PGOOD 15
SYNCOUT 16
MAXX16936
+
EP
1
2
3
4
8 BST
7 AGND
6 BIAS
5 COMP
TSSOP
TQFN
PIN
TSSOP
TQFN
1
16
2
1
3
2
4
3
5
4
6
5
7
6
8
7
9
8
Maxim Integrated
Pin Descriptions
NAME
FUNCTION
SYNCOUT
FSYNC
FOSC
OUT
FB
COMP
BIAS
AGND
BST
Open-Drain Clock Output. SYNCOUT outputs 180N out-of-phase signal relative to the
internal oscillator. Connect to OUT with a resistor between 100I and 1kW for 2MHz
operation. For low frequency operation, use a resistor between 1kW and 10kW.
Synchronization Input. The device synchronizes to an external signal applied to FSYNC.
Connect FSYNC to AGND to enable skip mode operation. Connect to BIAS or to an
external clock to enable fixed-frequency forced PWM mode operation.
Resistor-Programmable Switching Frequency Setting Control Input. Connect a resistor
from FOSC to AGND to set the switching frequency.
Switching Regulator Output. OUT also provides power to the internal circuitry when the
output voltage of the converter is set between 3V to 5V during standby mode.
Feedback Input. Connect an external resistive divider from OUT to FB and AGND to set
the output voltage. Connect to BIAS to set the output voltage to 5V.
Error Amplifier Output. Connect an RC network from COMP to AGND for stable
operation. See the Compensation Network section for more information.
Linear Regulator Output. BIAS powers up the internal circuitry. Bypass with a 1FF
capacitor to ground.
Analog Ground
High-Side Driver Supply. Connect a 0.22FF capacitor between LX and BST for
proper operation.
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