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부품번호 34710 기능
기능 Adjustable Dual Output Switching Power Supply
제조업체 Motorola Inc
로고 Motorola  Inc 로고


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34710 데이터시트, 핀배열, 회로
Freescale Semiconductor, Inc.
MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Document order number: MC34710
Rev 1.0, 04/2004
Preliminary Information
Adjustable Dual Output Switching
Power Supply
34710
The 34710 is a dual-output power regulator IC that integrates a switching
regulator, a linear regulator, supervisor circuitry, and a power supply
sequencer. With a wide operating input voltage range of 12 V to 32 V and
robust temperature limits, the 34710 is applicable in many commercial and
industrial applications that use an MCU.
A user-selectable 5.0 V/3.3 V buck switching regulator is provided for
board-level I/Os and user circuitry. The regulator is capable of delivering up to
1.0 A. The MCU core voltage is an adjustable 3.3 V/2.5 V/1.8 V/1.5 V linear
voltage regulator that can supply up to 500 mA.
The switching and linear regulator output voltage are determined through
three digital input mode terminals that can be controlled by an MCU.
Features
• High-Current Adjustable 5.0 V/3.3 V Switching Regulator
• Low Noise User-Selectable 3.3 V/2.5 V/1.8 V/1.5 V Linear Regulator
• On-Chip Thermal Shutdown and Error Reset Circuitry
• Supervisory Functions (Power-ON Reset and Error Reset Circuitry)
• Sequenced I/O and Core Voltages
• Pb-Free Packaging Designated by Suffix Code EW
ADJUSTABLE DUAL OUTPUT
SWITCHING POWER SUPPLY
EW (Pb-FREE) SUFFIX
CASE 1324-02
32-LEAD SOICW-EP
ORDERING INFORMATION
Device
Temperature
Range (TA)
Package
PC34710EW / R2
0°C to 85°C 32 SOICW-EP
Simplified Application Diagram
34710 Simplified Application Diagram
12 V to 32 V
34710
B+
Vb VSWITCH
CP2
VI/O_OUT
CP1
Mode0
Mode1
Mode2
LINB+
RST VCORE
GND
VI/O
VCORE
MCU
This document contains information on a product under development.
Motorola reserves the right to change or discontinue this product without notice.
© Motorola, Inc. 2004
For More Information On This Product,
Go to: www.freescale.com




34710 pdf, 반도체, 판매, 대치품
Freescale Semiconductor, Inc.
MAXIMUM RATINGS
All voltages are with respect to ground unless otherwise noted.
Rating
Symbol
Max Unit
GLOBAL ABSOLUTE MAXIMUM RATINGS
Input Power Supply Voltage
IB+ = 0 A
VB+ V
-0.3 to 36
Terminal Soldering Temperature (Note 1)
TSOLDER 260 °C
Power Dissipation (Note 2)
PD 3.0 W
ESD Standoff Voltage
Non-Operating, Unbiased, Human Body Model (Note 3)
VESD1
±2000
V
Thermal Resistance
Junction-to-Ambient (Note 4)
Junction-to-Ambient (Note 2)
Junction-to-Case
RθJA
RθJA
RθJC
°C/W
45
25
2.0
GLOBAL OPERATING RATINGS
Operating Ambient Temperature
TA
0 to 85
°C
Operating Device Junction Temperature
TJ 105 °C
Input Power Supply Voltage
IB+ = 0 A to 3.0 A
VB+ V
12 to 32
Quiescent Bias Current from B+ (Note 5)
VB+ = 12 V to 32 V
IB+(q)
mA
7.5
Operating Junction Temperature
TJ
-0 to 105
°C
VI/O SWITCHING REGULATOR (Note 6)
Maximum Output Voltage Startup Overshoot (COUT = 330 µF)
MODE0 = 0
MODE0 = Open
VI / O(STARTUP)
5.4
3.6
V
Maximum Output Current
TA = 0°C to 105°C
IVI/O
A
1.2
Notes
1. Soldering temperature limit is for 10 seconds maximum duration. Not designed for immersion soldering. Exceeding these limits may cause
malfunction or permanent damage to the device.
2. With 2.0 in2 of copper headsink.
3. ESD1 testing is performed in accordance with the Human Body Model (CZAP = 100 pF, RZAP = 1500 ).
4. With no additional heatsinking.
5. Maximum quiescent power dissipation is 0.25 W.
6. 12 V VB+ 32 V and -20°C TJ 145°C unless otherwise noted.
34710
4
For More Information OMnOTTOhRiOsLAPAroNdALuOcGt,INTEGRATED CIRCUIT DEVICE DATA
Go to: www.freescale.com

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34710 전자부품, 판매, 대치품
Freescale Semiconductor, Inc.
STATIC ELECTRICAL CHARACTERISTICS (continued)
Characteristics noted under conditions 4.75 V VIO 5.25 V, 12 V VB+ 32 V, and 0°C TJ 105°C unless otherwise noted.
Typical values noted reflect the approximate parameter mean at TA = 25°C under nominal conditions unless otherwise noted.
Characteristic
Symbol
Min Typ Max Unit
MODE TERMINALS OPERATING VOLTAGES
MODE Control Terminals Low Voltage
TJ = 0°C to TBD°C, VB+ = 12 V to 32 V
VIL(MODEn)
V
– – 0.825
MODE Control Terminals High Voltage
TJ = 0°C to TBD°C, VB+ = 12 V to 32 V
VIH (MODEn)
2.6 –
V
MODE Control Terminals Voltage with Input Floating
TJ = 0°C to TBD°C, VB+ = 12 V to 14 V
TJ = 0°C to TBD°C, VB+ = 14 V to 32 V
VMODE(FLOAT)
7.0
8.0
V
– 12
– 13.2
SUPERVISOR CIRCUITRY
Minimum Function VB+ for Charge Pump and Oscillator Running
VB+ (MIN)
9.0 –
–V
Minimum VB+ for RST Assertion, VB+ Rising
VB+(ASSERT) 2.0 –
–V
RST Low Voltage
VB+ = 2.0 V, IRST 5.0 mA
VOL V
– – 0.4
RST VI/O Threshold
VI/O Rising
VI/O Falling
VI / O t+
VI / O t-
V
– – VI/O(NOM)
VI/O (NOM)
- 225 mV
- 80 mV
RST Hysteresis for VI/O
VHYSVI/O
10 – 100 mV
RST VCORE Threshold
VCORE Rising
VCORE Falling
VCOREt+
VCORE t-
V
– – VCORE(NOM)
VCORE (NOM)
- 80 mV
- 225 mV
RST Hysteresis for VCORE
VB+ = 12 V to 32 V
VHYS CORE
mV
10 – 100
VCORE - VI/O for VCORE Shutdown
VB+ = 12 V to 32 V
VCORE (SHUTDOWN)
V
– TBD
Thermal Shutdown Temperature
TJ Rising
TJ (TSD)
170 –
°C
Overtemperature Hysteresis
TJ (HYSTERESIS)
20
TBD
°C
Vb CHARGE PUMP
Boost Voltage (Note 11)
VB+ = 12 V to 32 V, Ivb = 0.5 mA
Vb V
VB++10 V – VB++12 V
Notes
11. Bulk capacitor ESR 10 .
MOTOROLA ANALOG INTEGRATED CIRFCoUrITMDoErVeICEInDfAoTrAmation On This Product,
Go to: www.freescale.com
34710
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