MAX16051 데이터 시트보기 (PDF) - Maxim Integrated
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MAX16051 Datasheet PDF : 24 Pages
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MAX16050/MAX16051
Voltage Monitors/Sequencer Circuits with
Reverse-Sequencing Capability
Pin Description (continued)
PIN
MAX16050 MAX16051
25
—
26
—
27
—
NAME
SEQ1
SEQ2
SEQ3
FUNCTION
Sequence Order Select Inputs. SEQ1, SEQ2, and SEQ3 allow the order of sequencing for
each supply to be programmable (Table 1).
Charge-Pump Output. An internal charge pump boosts CP_OUT to (VCC + 5V ) to provide
28
28
CP_OUT a pullup voltage that can be used to drive external n-channel MOSFETs. CP_OUT sources
up to 25µA.
—
25
DISC5
Discharge Pulldown Input 5. During normal operation, DISC5 is high impedance. During a
fault condition or power-down, DISC5 provides an 85mA sink current.
—
26
OUT5
Open-Drain Output 5. When the voltage at SET4 is above 0.5V, OUT5 goes high
impedance. OUT5 requires an external pullup resistor and can be pulled up to VCC.
—
27
SET5
External Set Monitored Threshold 5. Monitor a voltage by setting the threshold with an
external resistive divider. The SET5 threshold is 0.5V.
—
—
EP
Exposed Pad. EP is internally connected to GND. Connect EP to the GND plane for
improved heat dissipation. Do not use EP as the only ground connection.
VBUS (MONITORED INPUT VOLTAGE)
DC-DC
EN
DC-DC
EN
DC-DC
EN
DC-DC
EN
V1
V2 SEQUENCED AND
MONITORED
V3 POWER SUPPLY
VOLTAGES
V4
VPU
VCC
EN
ON
OFF
GND
SHDN
MAX16050
RESET
OV_OUT
FAULT
REM
Figure 1. Typical Application Circuit for Sequencing Four DC-DC Converters
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