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부품번호 | AAT2782 기능 |
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기능 | Triple-Output PMIC | ||
제조업체 | Skyworks | ||
로고 | |||
전체 22 페이지수
DATA SHEET
AAT2782
Triple-Output PMIC: Dual Buck with Low-VIN LDO
General Description
Features
The AAT2782 provides three independently regulated
DC outputs: two step-down (Buck) regulators and a
single low input voltage, low drop-out (LDO) regulator.
The input voltage range for the step-down regulators is
2.7V to 5.5V, while the LDO regulator allows inputs from
1.5V to 5.5V. The low input voltage LDO regulator allows
high efficiency, step-down, low noise outputs. In addi-
tion, the LDO input may be connected to step-down
outputs 1 or 2.
The Channel 1 and 2 step-down regulators can deliver up
to 1200mA and 600mA output current, respectively.
Step-down output voltages are set with external resis-
tors. Switching frequency is set at 1.3MHz to ensure
small external filtering components. Current mode con-
trol assures fast transient response and stable operation
across the operating range. The Channel 3 LDO regulator
can deliver up to 400mA with -80dB power supply rejec-
tion ratio (PSRR) and 65μVRMS output noise with an
optional bypass capacitor. The LDO output voltage is fac-
tory set with a default voltage of 1.20V. Independent
enable and input pins are provided. The device consumes
low quiescent current and provides high efficiency across
the load range for maximum life in battery systems.
The AAT2782 is available in the Pb-free, 16-pin TDFN34
package and is rated over the -40°C to 85°C operating
temperature range.
• VIN Range Step-Down (Buck): 2.7V to 5.5V
• VIN Range Low Drop-Out (LDO): 1.5V to 5.5V
• Output Voltage Range: 0.6V to VIN
• Step-Down Output Current:
▪ Channel 1: 1200mA
▪ Channel 2: 600mA
• LDO Output Current:
▪ Channel 3: 400mA
• High Efficiency with Low RDS(ON) Switches
▪ Step-Down up to 97%
▪ LDO Regulator up to 80%
• Total Quiescient Current 170μA
• Shutdown Current: 1μA
• Step-Down Converters
▪ 1.3MHz Switching Frequency
▪ Current Mode Control
▪ Cycle-by-Cycle Current Limit
▪ High Efficiency Light-Load Mode Operation
• LDO Converter
▪ Ultra Low Noise with Bypass Capacitor
▪ Over-Current Protection
• 200μs Internal Soft Start
• Over-Temperature Protection
• TDFN34-16 Low Profile Package
• -40°C to 85°C Temperature Range
Applications
Typical Application
• Cellular and SmartPhones
• Microprocessor / DSP Core / IO Power
• PDAs and Handheld Computers
• Portable Media Players
• Wireless Data Systems
VIN
2.7V –5.5V
C1
10μF
AAT2782
C4
0.1μF
VP1
EN1
VIN
AGND
LX1
FB1
GND1
VP2 LX2
EN2
FB2
VIN = VOUT2
C3
2.2μF
GND2
VIN3
EN3
GND2
OUT3
BYP
AGND
EP
L1
1.5μH
VOUT1
1.2V, 1.2A
L2
2.2μH
R5
59.0k
R4
59.0k
C8
10μF
VOUT2
1.7V, 0.6A
R3
107k
R2
59.0k
VOUT3
1.2V, 400mA
C5
4.7μF
C7
0.01μF
C2
10μF
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
202038A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • June 8, 2012
1
DATA SHEET
AAT2782
Triple-Output PMIC: Dual Buck with Low-VIN LDO
Electrical Characteristics1
VP1 = VP2 = VIN = VIN3 = 3.3V; VIN3 = 1.8V, TA = -40°C to 85°C, unless noted otherwise. Typical values are at TA = 25°C.
Symbol Description
Conditions
General
VIN
VUVLO
IQ
ISHDN
TSD
THYS
Input Voltage
UVLO Threshold
Quiescent Current
Shutdown Current
Over Temperature Shutdown
Threshold
Over Temperature Shutdown
Hysteresis
VP1 Rising
VP1 Hysteresis
VP1 Falling
No load; EN1 = EN2 = EN3 = VIN
EN1 = EN2 =EN3 = GND
VIL Enable Threshold Low
For EN1, EN2, and EN3
VIH Enable Threshold High
For EN1, EN2, and EN3
IEN Enable Input Current
VIN = VP1 = VP2 = VEN1 = VEN2 = VEN3 = 5.5V
Channel 1: 1200mA Step-down (Buck) Converter
VP1
VOUT1
VOUT1(TOL)
VFB1
ΔVLOADREG1
ΔVLINEREG1
IQ1
ILIM1
RDS(ON)H1
RDS(ON)L1
FOSC1
TS1
Input Voltage
Output Voltage Range
Output Voltage Tolerance
Feedback Pin Voltage
Load Regulation
Line Regulation
Quiescent Current
P-Channel Current Limit
High Side Switch On-Resistance
Low Side Switch On-Resistance
Oscillator Frequency
Start-Up Time
IOUT1 = 0 to 1200mA; VP1 = 2.7 to 5.5V
IOUT1 = 0 to 1200mA
VP1 = 2.7 to 5.5V
No load; EN1 = VIN; EN2 = EN3 = GND
From Enable to Output Regulation
Min
2.7
2.1
1.4
-1.0
2.7
0.6
-3.0
0.591
Typ
140
130
20
0.6
0.2
0.3
75
1.7
250
190
1.3
200
Max Units
5.5 V
2.7 V
mV
V
300 μA
1.0 μA
°C
°C
0.6 V
V
1.0 μA
5.5
VP1
3.0
0.609
V
V
%
V
%
%
μA
A
mΩ
mΩ
MHz
μs
1. The AAT2782 is guaranteed to meet performance specifications over the –40°C to +85°C operating temperature range and is assured by design, characterization and correla-
tion with statistical process controls.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
4 202038A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • June 8, 2012
4페이지 DATA SHEET
AAT2782
Triple-Output PMIC: Dual Buck with Low-VIN LDO
Typical Characteristics—Buck Converter 1
Step-Down Converter 1 Efficiency vs. Load
(VOUT1 = 1.2V; VIN = 2.7V to 5.5V; L = 1.7µH)
100
90
80
70
60
50 VIN = 2.7V
VIN = 3.3V
40 VIN = 3.6V
30 VIN = 4.2V
20
VIN = 5.0V
VIN = 5.5V
10
0.1 1
10
100
1000
10000
Output Current (mA)
Step-Down Converter 1 DC Regulation
(VOUT1 = 1.2V; VIN = 2.7 to 5.5V; L = 1.7µH)
0.5
VIN = 2.7V
VIN = 3.3V
0.3 VIN = 3.6V
VIN = 4.2V
VIN = 5.0V
0.0 VIN = 5.5V
-0.3
-0.5
0.1
1 10 100 1000
Output Current (mA)
10000
Step-Down Converter 1 VIH and VIL
vs. Input Voltage
(VEN1 = VIN; VEN2 = 0V; VEN3 = 0V)
1.0
VIH
0.9
0.8 VIL
0.7
0.6
2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
Input Voltage (V)
Step-Down Converter 1 Input Current
vs. Input Voltage
(VEN1 = VIN; VEN2 = VEN3 = 0V)
110
100
90
80
70
60
2.5
3
3.5 4 4.5 5
Input Voltage (V)
85°C
25°C
-40°C
5.5 6
Step-Down Converter 1 Line Regulation
(VOUT1 = 1.2V; IOUT1 = 0.1mA to 1A; L = 1.7µH)
0.5
0.4 IOUT1 = 0.10mA
0.3
IOUT1 = 10mA
IOUT1 = 100mA
0.2 IOUT1 = 1200mA
0.1
0.0
-0.1
-0.2
-0.3
-0.4
-0.5
2.5 3.0 3.5 4.0
4.5 5.0
5.5
Input Voltage (V)
Step-Down Converter Output 1 Voltage Error
vs. Temperature
(VIN = 3.3V; VOUT1 = 1.2V; IOUT1 = 1.2A)
1.00
0.75
0.50
0.25
0.00
-0.25
-0.50
-0.75
-1.00
-50 -25
0
25 50
75 100
Temperature (°C)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
202038A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • June 8, 2012
7
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부품번호 | 상세설명 및 기능 | 제조사 |
AAT2782 | Triple Output PMIC | Advanced Analogic Technologies |
AAT2782 | Triple-Output PMIC | Skyworks |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |