Microchip MCP16412 Bedienungsanleitung
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MCP1641X
2020-2021
Microchip Technology Inc. and its subsidiaries
DS20006394D-page 1
Features
•Input Voltage Range: 0.8V (after Start-up)
to 5.25V
•Low Device Quiescent Current: 5 µA (typical),
PFM Mode (not switching)
•Up to 96% Efficiency
•1A Typical Inductor Peak Current Limit:
-I
OUT
> 170 mA at 2V V
OUT
, 1.2V V
IN
-I
OUT
> 200 mA at 3.3V V
OUT
, 1.5V V
IN
-I
OUT
> 600 mA at 5.0V V
OUT
, 3.6V V
IN
•Adjustable Output Voltage Range
•Automatic Input-to-Output Bypass Operation
•Selectable Switching Mode:
-PWM operation: 500 kHz (MCP16412/4/6/8)
-Automatic PFM/PWM operation
(MCP16411/3/5/7)
•Programmable
Undervoltage Lockout (UVLO)
•Programmable Low Battery Output (LBO)
•Selectable Status Indicator:
-Power Good and Die Overtemperature
output (MCP16411/2/3/4)
-Power Good output (MCP16415/6/7/8)
•Internal Synchronous Rectifier
•Internal Compensation
•Inrush Current Limiting and Internal Soft Start
•Low Noise, Anti-Ringing Control
•Thermal Shutdown
•Selectable Shutdown States:
-Output discharge option (MCP16411/2/5/6)
-Input-to-output bypass option
(MCP16413/4/7/8)
•Shutdown Current: 2.3 µA (typical)
•Available Packages:
-10-Lead MSOP
-10-Lead 3 mm x 3 mm TDFN
Applications
•Personal and Health Care Products
•Single-Cell or Two-Cell Powered IoT Devices
•Bluetooth
®
Headsets
•Remote Controllers, Portable Instruments
•Wireless Sensors, Data Loggers
Description
The MCP1641X Step-up DC-DC Converters family
provides an automatic input-to-output voltage bypass
operation, which helps optimize battery utilization and
achieve high efficiency, while the nominal voltage of
fresh batteries remains in the same range with the con-
verter’s output value. The MCP1641X can be powered
by either single-cell, two-cell alkaline/NiMH batteries or
single-cell Li-Ion/Li-Polymer batteries.
A low-voltage designed architecture allows the
regulator to start up without high inrush current or
output voltage overshoot from a low input voltage. The
start-up voltage is easily programmed by a resistive
divider connected to the UVLO pin. If the resistive
divider is not used, the default start-up voltage is 0.85V.
The 0.8V built-in UVLO
STOP
helps prevent deep dis-
charge of the alkaline battery, which can cause battery
leakage. An open-drain Low Battery Output (LBO) pin
warns the user to replace the battery if the input voltage
ramps down to the programmed UVLO
START
value.
The MCP1641X family introduces an additional safety
feature to a low-voltage boost converter: Over-
temperature Output. Devices, such as personal care
products, Bluetooth headsets or toys, will benefit from
the combined Power Good and Die Overtemperature
(PGT) output, which flags a warning signal when the out-
put voltage level drops within 10% or the die temperature
exceeds the +75°C (typical).
(1)
Both functions are
implemented in the MCP16411/2/3/4 devices (on the
same pin, PGT), while the MCP16415/6/7/8 devices
have only the Power Good option.
Package Types
Note1:Factory programmable from +55C to
+85C, at +10C increments, by customer
request.
*Includes Exposed Thermal Pad (EP), see Table 4-1.
**See Table 3-1 for device options – PGT or PG pin.
MCP1641X
3x3 TDFN*
1
2
3
4
10
9
8
7
EP
11
8
1
2
3
10
V
IN
P
GND
LBO
V
FB
PGT**
9
S
GND
MCP1641X
10-Lead MSOP
7
4
SW
V
OUT
5
6
5
6
EN
UVLO
LBO
V
FB
V
OUT
UVLO
V
IN
P
GND
S
GND
SW
EN
PGT**
Low I
Q
Boost Converter with Programmable Low Battery, UVLO and
Automatic Input-to-Output Bypass Operation
Produktspezifikationen
| Marke: | Microchip |
| Kategorie: | Nicht kategorisiert |
| Modell: | MCP16412 |
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