|
ROHM Semiconductor |
Single-chip Type with Built-in FET Switching Regulator Series
Simple Step-down
Switching Regulators
with Built-in Power MOSFET
BD9701F P/CP-V5/T/T-V5, BD9703FP/CP-V5/T/T-V5,BD9702CP-V5/T/T-V5
No.09027EBT01
●Description
The BD9701/BD9703/BD9702 are single-channel step-down switching regulator capable of PWM operation.
The Pch MOS FET is built in for high efficiency in small load area.Lower electricity consumption of operating current 4mA
(Typ) and stand-by current 0uA(Typ) is realized by adopting Bi-CMOS process.
●Features
1) Maximum switching current: 1.5A(BD9701/BD9703), 3A(BD9702)
2) Built-in Pch FET ensures high efficiency
3) Output voltage adjustable via external resistors
4) High switching frequency: 100kHz (BD9701), 300kHz(BD9703), 110kHz(BD9702)
5) Overcurrent and thermal shutdown protection circuits built in
6) ON/OFF control via STBY pin
7) Small surface mount TO252-5 package (only BD9701FP, BD9703FP)
●Applications
TVs, printers, DVD players, projectors, gaming devices, PCs, car audio/navigation systems, ETCs, communication equipment,
AV products, office equipment, industrial devices, and more.
●Line Up
BD9701FP/CP-V5/T/T-V5 BD9703FP/CP-V5/T/T-V5
BD9702CP-V5/T/T-V5
Output Current
1.5A
3.0A
Input Voltage
8 or Vo+3 ~ 36V
Switching Frequency
100kHz (fixed)
300kHz (fixed)
110kHz (fixed)
External Synchronization
Stand-by Function
×
○
Operating Temperature
-40 ~ +85℃
Package T
O252-5/TO220CP-V5/TO220FP-5/TO220FP-5 (V5) TO220CP-V5/TO220FP-5/TO220FP-5 (V5)
www.rohm.com
© 2009 ROHM Co., Ltd. All rights reserved.
1/16
2009.04- Re v.B http://www.Datasheet4U.com
BD9701FP/CP-V5/T/T-V5,BD9703FP/CP-V5/T/T-V5,BD9702CP-V5/T/T-V5 Technical Note
●Absolute Maximum Ratings (Ta=25℃)
Parameter S
ymbol
Supply Voltage (VCC-GND)
VCC
STBY-GND V
STBY 36
OUT-GND V
O 36
INV-GND V
INV 10
Maximum Switching Current
BD9701/BD9703
BD9702
Iout
Power Dissipation
TO252
TO220
Pd
Operating Temperature
Topr
Storage Temperature
*1 Without external heat sink, the power dissipation reduces by 6.4mW/℃ over 25℃.
*2 Without external heat sink, the power dissipation reduces by 16.0mW/℃ over 25℃.
Reduced by 160mW/℃, when mounted on Infinity size heatsink.
Tstg
Ratings
36
1.5
3
0.8 (*1)
2(*2)
-40~+85
-55~+150
Unit
V
V
V
V
A
W
℃
℃
●Operating Conditions(Ta=-40~+85℃)
Parameter S
Input Voltage
ymbol
VCC
MIN
8.0 or Vo+3(*3)
Output Voltage
Vo 1.0
*3The minimum value of an input voltage is the higher either 8.0V or Vo+3
Limit
TYP
-
-
MAX
35.0
32
Unit
V
V
●Electrical Characteristics
○BD9701FP/CP-V5/T/T-V5 (Unless otherwise noted, Ta=25℃,VCC=12V,Vo=5V,STBY=3V)
Parameter S
ymbol
MIN T
Limit
YP
Unit
MAX
Conditions
Output ON Resistance
Ron - 1.0 1.5 Ω desi gn guarantee
Efficiency
η - 86 - % Io=0.5A design guarantee
Switching Frequency
fosc 80 100 120 kHz
Load Regulation
Line Regulation
ΔVOLOAD -
ΔVOLINE -
10 40 mV VCC=20V,Io=0.5~1.5A
40 100 mV VCC=10~30V,Io=1.0A
Over Current Protection Limit
Iocp 1.6 - - A
INV Pin Threshold Voltage
INV Pin Threshold Voltage
Thermal Variation
INV Pin Input Current
VINV
0.98 1.00 1.02 V
ΔVINV -
±0.5 - % Tj=0~85℃ design guarantee
IINV - 1 - μA VINV=1.0V
STBY Pin
Threshold Voltage
STBY Pin Input Current
ON
OFF
VSTBYON 2.0
VSTBYOFF -0.3 -
Istby
5
-
25
36 V
0.3 V
50 μA STBY=3V
Circuit Current
Icc - 4 12 mA
Stand-by Current
Ist
This product is not designed to be resistant to radiation.
- 0 5 μA STBY=0V
www.rohm.com
© 2009 ROHM Co., Ltd. All rights reserved.
2/16
2009.04- Re v.B
|