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MCP16252のメーカーはMicrochipです、この部品の機能は「PFM/PWM Synchronous Boost Regulator」です。 |
部品番号 | MCP16252 |
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部品説明 | PFM/PWM Synchronous Boost Regulator | ||
メーカ | Microchip | ||
ロゴ | |||
このページの下部にプレビューとMCP16252ダウンロード(pdfファイル)リンクがあります。 Total 30 pages
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
1 Page MCP16251/2
1.0 ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings †
EN, VFB, VIN, VSW, VOUT - GND ......................... +6.5V
EN, VFB .........< maximum VOUT or VIN > (GND - 0.3V)
Output Short-Circuit Current ...................... Continuous
Output Current Bypass Mode........................... 400 mA
Power Dissipation ............................ Internally Limited
Storage Temperature ......................... -65°C to +150°C
Ambient Temp. with Power Applied...... -40°C to +85°C
Operating Junction Temperature........ -40°C to +125°C
ESD Protection On All Pins:
HBM ............................................................... 4 kV
MM ................................................................ 400V
† Notice: Stresses above those listed under “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 sections of this
specification is not intended. Exposure to maximum
rating conditions for extended periods may affect
device reliability.
DC CHARACTERISTICS
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
Input Characteristics
Minimum Start-Up Voltage
Minimum Input Voltage
After Start-Up
VIN
VIN
— 0.82 — V Note 1
— 0.35 — V Note 1
Output Voltage Adjust
Range
VOUT
1.8 —
5.5
V
VOUT VIN
Note 2
Maximum Output Current
Feedback Voltage
Feedback Input
Bias Current
IOUT
VFB
IVFB
100
1.1931
—
150
125
225
1.23
10
—
—
—
1.2669
—
1.2V VIN, 2.0V VOUT
mA 1.5V VIN, 3.3V VOUT
3.3V VIN, 5.0V VOUT
V
nA
VOUT Quiescent Current
IQOUT
— 4.0
IOUT = 0 mA, device is not
switching, EN = VIN = 4.0V,
8 µA VOUT = 5.0V, does not
include feedback divider
current (Note 3)
VIN Sleep Current
IQIN
— 1.0
2.3
µA
IOUT = 0 mA, EN = VIN
(Note 3), (Note 5)
No Load Input Current
IIN0
— 14
25
µA
IOUT = 0 mA,
device is switching
Quiescent Current –
Shutdown
IQSHDN — 0.6
VOUT = EN = GND;
— µA includes N-Channel and
P-Channel Switch Leakage
Note 1:
2:
3:
4:
5:
3.3 k resistive 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.
220 resistive load, 3.3VOUT (15 mA).
Determined by characterization, not production tested.
2013 - 2016 Microchip Technology Inc.
DS20005173B-page 3
3Pages 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.
3.33
3.32
3.31
ILOAD = 1 mA
3.30
3.29
ILOAD = 10 mA
ILOAD = 50 mA
3.28
3.27
-40 -25 -10 5 20 35 50 65
Ambient Temperature (°C)
80
FIGURE 2-7:
Temperature.
3.3V VOUT vs. Ambient
500
450
400
VOUT = 3.3V
VOUT = 5.0V
350
VOUT = 2.0V
300
250
200
150
100
50
0
0.9 1.2 1.5 1.8 2.1 2.4 2.7 3 3.3 3.6 3.9 4.2 4.5
Input Voltage (V)
FIGURE 2-10:
Maximum IOUT vs. VIN, after
Start-up, VOUT Maximum 5% below Regulation
Point.
3.32
3.31
3.30
VIN = 1.5V
VIN = 1.2V
3.29
3.28
3.27
VIN = 2.4V
3.26
3.25
-40
VIN = 0.9V
ILOAD = 20 mA
-25 -10 5 20 35 50 65 80
Ambient Temperature (°C)
FIGURE 2-8:
Temperature.
3.3V VOUT vs. Ambient
510
505
500
495
490
485
480
475
470
-40 -25 -10 5 20 35 50 65
Ambient Temperature (°C)
FIGURE 2-11:
Temperature.
FOSC vs. Ambient
80
3.33
3.32
TA = +85°C
3.31
3.30
TA = +25°C
3.29
3.28
TA = -40°C
3.27
3.26
ILOAD = 50 mA
1.5 1.6 1.7 1.8 1.9 2 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8
Input Voltage (V)
FIGURE 2-9:
3.3V VOUT vs. VIN.
1.2
VOUT = 3.3V
1.1
---- Electronic Load, CC
Resistive Load
1 ILOAD = 20 mA
0.9
0.8
0.7 ILOAD = 1 mA
0.6
-40 -25 -10 5 20 35 50 65
Ambient Temperature (°C)
80
FIGURE 2-12:
VIN Start-Up vs.
Temperature into Resistive Load and Constant
Current.
DS20005173B-page 6
2013 - 2016 Microchip Technology Inc.
6 Page | |||
ページ | 合計 : 30 ページ | ||
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部品番号 | 部品説明 | メーカ |
MCP16251 | PFM/PWM Synchronous Boost Regulator | Microchip |
MCP16252 | PFM/PWM Synchronous Boost Regulator | Microchip |