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MCP16252 데이터시트 PDF




Microchip에서 제조한 전자 부품 MCP16252은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


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부품번호 MCP16252 기능
기능 PFM/PWM Synchronous Boost Regulator
제조업체 Microchip
로고 Microchip 로고


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MCP16252 데이터시트, 핀배열, 회로
MCP16251/2
Low Quiescent Current, PFM/PWM Synchronous Boost Regulator
with True Output Disconnect or Input/Output Bypass Option
Features
• Up to 96% Typical Efficiency
• 650 mA Typical Peak Input Current Limit:
- IOUT > 100 mA @ 3.3V VOUT, 1.2V VIN
- IOUT > 250 mA @ 3.3V VOUT, 2.4V VIN
- IOUT > 225 mA @ 5.0V VOUT, 3.3V VIN
• Low Device Quiescent Current:
- Output Quiescent Current: < 4 µA typical,
device is not switching (VOUT > VIN,
excluding feedback divider current)
- Input Sleep Current: 1 µA
- No Load Input Current: 14 µA typical
• Shutdown Current: 0.6 µA typical
• Low Start-Up Voltage: 0.82V, 1 mA load
• Low Operating Input Voltage: down to 0.35V
• Adjustable Output Voltage Range: 1.8V to 5.5V
• Maximum Input Voltage VOUT < 5.5V
• Automatic PFM/PWM Operation:
- PWM Operation: 500 kHz
- PFM Output Ripple: 150 mV typical
• Feedback Voltage: 1.23V
• Internal Synchronous Rectifier
• Internal Compensation
• Inrush Current Limiting and Internal Soft Start
(1.5 ms typical)
• Selectable, Logic Controlled, Shutdown States:
- True Load Disconnect Option (MCP16251)
- Input-to-Output Bypass Option (MCP16252)
• Anti-Ringing Control
• Overtemperature Protection
• Available Packages:
- SOT-23, 6-Lead
- TDFN, 2 x 3 x 0.8 mm, 8-Lead
Package Types
MCP16251/2
6-Lead SOT-23
MCP16251/2
2x3x0.8 TDFN*
SW 1
GND 2
EN 3
6 VIN VFB 1
8 VIN
5 VOUT SGND 2
4 VFB
PGND 3
EN 4
EP
9
7 VOUTS
6 VOUTP
5 SW
* Includes Exposed Thermal Pad (EP); see Table 3-1.
Applications
• One, Two and Three-Cell Alkaline and NiMH/NiCd
Portable Products
• Solar Cell Applications
• Personal Care and Medical Products
• Bias for Status LEDs
• Smartphones, MP3 Players, Digital Cameras
• Remote Controllers, Portable Instruments
• Wireless Sensors
• Bluetooth Headsets
• +3.3V to +5.0V Distributed Power Supply
General Description
The MCP16251/2 is a compact, high-efficiency, fixed
frequency, synchronous step-up DC-DC converter.
This family of devices provides an easy-to-use power
supply solution for applications powered by either
one-cell, two-cell or three-cell alkaline, NiCd, NiMH,
one-cell Li-Ion or Li-Polymer batteries.
Low-voltage technology allows the regulator to start-up
without high inrush current or output voltage overshoot
from a low-voltage input. High efficiency is
accomplished by integrating the low-resistance
N-Channel boost switch and synchronous P-Channel
switch. All compensation and protection circuitry are
integrated to minimize external components.
MCP16251/2 operates and consumes less than 14 µA
from battery after start-up, while operating at no load
(VOUT = 3.3V, VIN = 1.5V). The devices provide a true
disconnect from input to output (MCP16251) or an
input-to-output bypass (MCP16252), while in shutdown
(EN = GND). Both shutdown options consume less
than 0.6 µA from battery.
Output voltage is set by a small external resistor
divider. Two package options, SOT-23, 6-lead and
TDFN, 2 x 3 x 0.8 mm, 8-lead are available.
2013 - 2016 Microchip Technology Inc.
DS20005173B-page 1




MCP16252 pdf, 반도체, 판매, 대치품
MCP16251/2
DC CHARACTERISTICS (CONTINUED)
Electrical Characteristics: Unless otherwise indicated, VIN = 1.5V, COUT = CIN = 10 µF, L = 4.7 µH, VOUT = 3.3V,
IOUT = 0 mA, TA = +25°C. Boldface specifications apply over the TA range of -40°C to +85°C.
Parameters
Sym.
Min.
Typ.
Max. Units
Conditions
NMOS Switch Leakage
PMOS Switch Leakage
NMOS Switch
ON Resistance
PMOS Switch
ON Resistance
NMOS Peak
Switch Current Limit
INLK
— 0.15
IPLK — 0.15
RDS(ON)N — 0.45
RDS(ON)P
0.9
IN(MAX)
— 650
VIN = VSW = 5V
— µA VOUT = 5.5V
VEN = VFB = GND
µA
VIN = VSW = GND
VOUT = 5.5V
VIN = 3.3V
ISW = 100 mA
VIN = 3.3V
ISW = 100 mA
— mA Note 5
VOUT Accuracy
VOUT%
Line Regulation
(VOUT/VOUT)
/VIN
Load Regulation
VOUT/VOUT
Maximum Duty Cycle
Switching Frequency
EN Input Logic High
EN Input Logic Low
EN Input Leakage Current
DCMAX
fSW
VIH
VIL
IENLK
-3
-0.4
-1.5
87
425
70
Soft Start Time
tSS
0.3
0.1
89
500
5.0
+3
%
Includes Line and Load
Regulation; VIN = 1.5V
0.4
%/V
VIN = 1.5V to 2.8V
IOUT = 50 mA
1.5
%
IOUT = 25 mA to 100 mA
VIN = 1.5V
91 % Note 5
575 kHz
— % of VIN IOUT = 1 mA
20 % of VIN IOUT = 1 mA
— nA VEN = 5V
EN Low to High
1.5 ms 90% of VOUT
(Note 4), (Note 5)
Thermal Shutdown
Die Temperature
Die Temperature
Hysteresis
TSD
TSDHYS
— 160
— 20
C
IOUT = 20 mA
VIN > 1.4V
C
Note 1:
2:
3:
4:
5:
3.3 kresistive load, 3.3VOUT (1 mA).
For VIN > VOUT, VOUT will not remain in regulation.
IQOUT is measured at VOUT, VOUT is supplied externally for VOUT > VIN (device is not switching), IQIN is
measured at VIN pin during Sleep period, no load.
220resistive load, 3.3VOUT (15 mA).
Determined by characterization, not production tested.
TEMPERATURE SPECIFICATIONS
Electrical Characteristics: Unless otherwise indicated, VIN = 1.5V, COUT = CIN = 10 µF, L = 4.7 µH, VOUT = 3.3V, IOUT = 0 mA.
Parameters
Sym. Min. Typ. Max. Units
Conditions
Temperature Ranges
Operating Temperature Range
Storage Temperature Range
Maximum Junction Temperature
Package Thermal Resistances
Thermal Resistance, SOT-23, 6-LD
Thermal Resistance, TDFN, 2x3x0.8m, 8-LD
TJ
TA
TJ
JA
JA
-40 —
+85 °C Steady State
-65 — +150 °C
— — +150 °C Transient
— 190.5 — °C/W EIA/JESD51-3 Standard
— 52.5
— °C/W
DS20005173B-page 4
2013 - 2016 Microchip Technology Inc.

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MCP16252 전자부품, 판매, 대치품
MCP16251/2
Note: Unless otherwise indicated, VIN = EN = 1.5V, COUT = CIN = 10 µF, L = 4.7 µH, VOUT = 3.3V, ILOAD = 0 mA,
TA = +25°C, SOT-23 package.
1.3 VOUT =1.8V
1.1
0.9
Startup
0.7
0.5 Shutdown
0.3
0
10 20 30 40 50 60 70 80 90
Load Current (mA)
FIGURE 2-13:
1.8VOUT Minimum Start-Up
and Shutdown VIN into Resistive Load vs. IOUT.
8
7
6 P - Channel
5
4
3
2 N - Channel
1
0
0.9 1.2 1.5 1.8 2.1 2.4 2.7 3 3.3 3.6 3.9 4.2
> VIN or VOUT
FIGURE 2-16:
N-Channel and P-Channel
RDSON vs. the Maximum VIN or VOUT.
1.3 VOUT = 3.3V
1.1
0.9 Startup
0.7
0.5
Shutdown
0.3
0
10 20 30 40 50 60 70 80 90 100
Load Current (mA)
FIGURE 2-14:
3.3VOUT Minimum Start-Up
and Shutdown VIN into Resistive Load vs. IOUT.
1.7 VOUT = 5.0V
1.5
1.3
1.1
Startup
0.9
0.7
0.5
0.3
0
Shutdown
10 20 30 40 50 60 70 80 90 100
Load Current (mA)
FIGURE 2-15:
5.0VOUT Minimum Start-Up
and Shutdown VIN into Resistive Load vs. IOUT.
45
40
35
30 VOUT = 2.0V
25
VOUT = 3.3V
VOUT = 5.0V
20
15
10
5
0.8 1.2 1.6 2 2.4 2.8 3.2 3.6 4 4.4
Input Voltage (V)
FIGURE 2-17:
Average of PFM-to-PWM
Threshold Current vs. VIN.
IOUT = 1 mA
VOUT 100 mV/div
AC Coupled
VSW
2 V/div
IL 100 mA/div
200 µs/div
FIGURE 2-18:
MCP16251 3.3V VOUT PFM
Mode Waveforms.
2013 - 2016 Microchip Technology Inc.
DS20005173B-page 7

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