MCP16502
High-Performance PMIC for SAMA5DX/SAM9X6 MPUs
Features
• Input Voltage: 2.7V to 5.5V
• Four 1A Output Current Buck Channels with
100% Maximum Duty Cycle Capability
• 2 MHz Buck Channels PWM Operation
• Two Auxiliary 300 mA Low-Dropout Linear
Regulators (LDOs)
• ±1% Voltage Accuracy for DDR (Buck2 Output),
Core (Buck3 Output) and CPU (Buck4 Output)
• Pin-Selectable Output Voltages for Buck2:
1.2V, 1.35V, 1.8V
• MPU-Specific Built-in Default Channel
Sequencing and nRSTO Assertion Delay
• Support of Hibernate, Low-Power and
High-Performance Modes with DVS
• Push Button Long Press Time-out Function
• 1 MHz I
2
C Interface for Programming and
Diagnostics
• Low Noise, Forced PWM (FPWM) and Low I
Q
,
Light Load, High-Efficiency Mode Available
• I
2
C-Selectable Displacement (±16.5%) of PWM
Switching Frequency
• Leakage-Free Interfacing to MPU in Any
Operating Condition through Optimized
ESD Protection
• Less than 300 µA Low-Power Mode Typical
Quiescent Current Bucks and LDO1 On, No Load
• 10 µA Maximum Shutdown Current (V
IN
= 4.5V,
T
J
= +105°C)
• Cost and Size-Optimized BOM
• Thermal Shutdown and Current Limit Protection
• User-Programmable Overcurrent Fault Response
• 32-Pin 5 mm × 5 mm VQFN Package
• -40°C to +125°C Junction Temperature Range
Description
The MCP16502 is an optimally integrated PMIC,
compatible with Microchip’s EMPUs (Embedded Micro-
processor Units), requiring Dynamic Voltage Scaling
(DVS) with the use of High-Performance mode (HPM).
It is compatible with SAMA5DX and SAM9X6 MPUs,
which are supported by dedicated device variants that
optimize the solution BOM.
The MCP16502 integrates four DC-DC Buck regulators
and two auxiliary LDOs, and provides a comprehensive
interface to the MPU, which includes an interrupt flag
and a 1 MHz I
2
C interface.
All Buck channels can support loads up to 1A and are
100% duty cycle-capable.
Two 300 mA LDOs are provided such that sensitive
analog loads can be supported.
The DDR memory voltage (Buck2 output) is selectable
by means of a 3-state input pin. This method allows
greater precision in the output voltage setting by elimi-
nating inaccuracies due to external feedback resistors,
while minimizing external component count. The
voltage selection set allows easy migration across
different generations of memory.
The default power channel sequencing is built-in
according to the requirements of the MPU. A dedicated
pin (LPM) facilitates the transition to Low-Power modes
and the implementation of Backup mode with DDR in
self-refresh (Hibernate mode).
The MCP16502 features a low no-load operational
quiescent current and it draws less than 10 µA in full
shutdown.
Active discharge resistors are provided on each output.
All Buck channels support safe start-up into pre-biased
outputs.
The MCP16502 is available in a 32-pin 5 mm x 5 mm
VQFN package with an operating junction temperature
range from -40°C to +125°C.
Applications
• High-Performance MPUs Power Supply Solutions
• µC/µP, FPGA and DSP Power
2019 Microchip Technology Inc.
DS20006275B-page 1
MCP16502
1.0
ELECTRICAL CHARACTERISTICS
Absolute Maximum Ratings†
SVIN to SGND .............................................................................................................................................. -0.3V to +6V
Power Supply Voltage Pins PVINx to PGNDx .............................................................................................. -0.3V to +6V
Power Supply Voltage Pins PVINx to SVIN ............................................................................................... -0.3V to +0.3V
OUTx Sense Pins to SGND .............................................................................................. ............................-0.3V to +6V
LVIN to SGND ................................................................................................................................. -0.3V to V
SVIN
+ 0.3V
Output Switch Voltage SWx to PGNDx ..........................................................................................-0.3V to V
PVINx
+ 0.3V
PGNDx to SGND ....................................................................................................................................... -0.3V to +0.3V
nSTRT, SELV2, SELVL1 to SGND ................................................................................................. -0.3V to V
SVIN
+ 0.3V
SDA, SCL, LPM, HPM, PWRHLD, nRSTO, nSTRTO, nINTO to SGND....................................................... -0.3V to +6V
Maximum Junction Temperature................................................................................................. ............................150°C
Storage Temperature ............................................................................................................................. -65°C to +150°C
ESD Protection on All Pins:
HBM ..................................................................................................................................................................... 2 kV
MM ......................................................................................................................................................................200V
CDM ................................................................................................................................................................ 1000V
† Notice:
Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the
device. This is a stress rating only and functional operation of the device at those or any other conditions above
those indicated in the operational listings of this specification is not intended. Exposure to maximum rating
conditions for extended periods may affect device reliability.
AC/DC CHARACTERISTICS
Electrical Specifications:
Unless otherwise specified: T
A
= T
J
= +25°C; V
IN
= SVIN = PVINx = LVIN = 5V; L1 = L2 = L3 = L4 = 2.2 µH;
C
OUT1,
C
OUT2,
, C
OUT3
, C
OUT4
= 22 µF.
Boldface
type applies for junction temperatures T
J
of -40°C to +125°C.
Parameters
System Input Supply
Supply Voltage Range
Undervoltage Lockout
Threshold
Undervoltage Lockout
Hysteresis
Shutdown (Off) Current
V
IN
V
UVLO_TH
V
UVLO_HYS
I
SHDN
2.7
2.4
—
—
—
2.55
125
7
11
5.5
2.7
V
V
mV
µA
PWRHLD = LPM = HPM =
0,
nSTRT, nRSTO, nSTRTO, nINTO
floating, V
IN
= 5.5V
PWRHLD = LPM = HPM =
0,
nSTRT, nRSTO, nSTRTO, nINTO
floating, V
IN
= 4.5V,
T
J
= -40°C to +105°C
I
OUT2
= 0 mA, Buck2 on,
all other channels off,
V
OUT2
> V
OUT2_NOM
,
LPM =
1,
PWRHLD = HPM =
0
I
OUT2
= 0 mA, Buck2 on
(V
OUT2
= 1.2V),
all other channels off, LPM =
1,
PWRHLD = HPM =
0
Turn-on
Sym.
Min.
Typ.
Max.
Units
Conditions
I
SHDN_105
(1)
—
6
10
µA
Hibernate Mode
Non-Switching Quiescent
Current
Hibernate Mode
Operational Quiescent
Current (Switching, One
Buck Channel On)
(Note
2)
Note 1:
2:
3:
4:
I
QNS_HIB
—
120
150
µA
I
QOP_HIB1
—
120
—
µA
Maximum limit for T
J
= -40°C to +105°C based on characterization data.
Not production tested.
Typical value from bench characterization, maximum value production tested.
Input filters on the SDA and SCL inputs suppress noise spikes of less than 50 ns.
2019 Microchip Technology Inc.
DS20006275B-page 5
京公网安备 11010802033920号
Copyright © 2005-2024 EEWORLD.com.cn, Inc. All rights reserved
EEWORLD
