Microchip MIC2126 Bruksanvisning
Microchip
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MIC2126
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2015 Microchip Technology Inc. DS20005459B-page 1
MIC2125/6
Features
• Hyper Speed Control Architecture Enables:
- High delta V operation (VIN = 28V and VOUT
= 0.6V)
- Any Capacitor™ stable
• 4.5V to 28V Input Voltage
• Adjustable Output Voltage from 0.6V to 24V
• 200 kHz to 750 kHz Programmable Switching
Frequency
• HyperLight Load® (MIC2125)
• Hyper Speed Control® (MIC2126)
• Enable Input and Power Good Output
• Built-in 5V Regulator for Single-Supply Operation
• Programmable current limit and “hiccup” mode
short-circuit protection
• 7 ms internal soft-start, internal compensation,
and thermal shutdown
• Supports Safe Start-Up into a Prebiased Output
• –40°C to +125°C Junction Temperature Range
• Available in 16-pin, 3 mm × 3 mm QFN Package
Applications
• Networking/Telecom Equipment
• Base Stations, Servers
• Distributed Power Systems
• Industrial Power Supplies
General Description
The MIC2125 and MIC2126 are constant-frequency
synchronous buck controllers featuring a unique
adaptive ON-time control architecture. The MIC2125/6
operate over an input voltage range from 4.5V to 28V
and can be used to supply load current up to 25A. The
output voltage is adjustable down to 0.6V with a
guaranteed accuracy of ±1%. The device operates with
programmable switching frequency from 200 kHz to
750 kHz.
HyperLight Load® architecture provides the same high
efficiency and ultra-fast transient response as the
Hyper Speed Control® architecture under medium to
heavy loads. It also maintains high efficiency under
light load conditions by transitioning to variable
frequency, discontinuous conduction mode operation.
The MIC2125/6 offer a full suite of features to ensure
protection of the IC during fault conditions. These
include undervoltage lockout to ensure proper
operation under power-sag conditions, internal
soft-start to reduce inrush current, “hiccup” mode
short-circuit protection, and thermal shutdown.
Package Type
MIC2125/6
16-Pin 3 mm x 3 mm QFN (ML)
VDD
PVDD
ILIM
DL
AGND
NC
OVP
BST
FB
PG
EN
VIN
SW
DH
FREQ
PGND
EP 17
1
2
3
4
5 6 7 8
12
11
10
9
16 15 14 13
28V Synchronous Buck Controllers
Featuring Adaptive ON-Time Control
Produktspecifikationer
| Varumärke: | Microchip |
| Kategori: | Inte kategoriserad |
| Modell: | MIC2126 |
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