Hi-performance Regulator IC Series for PCs
PGOOD IC
for PC
No.09030EBT18
BD4140HFV
●Description
BD4140HFV is 1ch reset IC for watching the voltage. The detected voltage is 0.5V, and it is available to several kinds of
voltage with additional external resistance. For the independent supply voltage (VCC), the “L” level of voltage is guaranteed
in case the watching input voltage is also low.
●Features
1) Open drain output type
2) Built in Under Voltage LockOut (UVLO) circuit
3) HVSOF5 package : 1.6×1.6×0.6(mm)
●Applications
Laptop PC, Desktop PC, LCD-TV, Printer, STV, Digital appliances
●Absolute maximum ratings (Ta=25℃)
Parameter
Terminal voltage
Power Dissipation
PGOOD Capacity Current
Operating temperature range
Storage temperature range
Junction Temperature
Symbol
VCC, IN, DLY, PGOOD
Pd
IPGOOD
Topr
Tstg
Tjmax
BD4140HFV
6 *1
*2
0.67
5
-10~+100
-55~+150
+150
Unit
V
W
mA
℃
℃
℃
*1 Do not however exceed Pd.
*2 Reduced by θja= 186.6℃W for increase in Ta of 1℃ over 25℃.
(when mounted on a board 70.0mm×70mm×1.6mm Glass-epoxy PCB which has 1 layer. (copper foil density :2%))
*3 Reduced by θja= 185.2℃W for increase in Ta of 1℃ over 25℃
(when mounted on a board 70.0mm×70mm×1.6mm Glass-epoxy PCB which has 1 layer.)
●Operating Conditions (Ta=25℃)
Parameter
Terminal voltage
Symbol
Min.
Max.
VCC
3.0
5.5
V
IN
-0.3
VCC-2
V
PGOOD
-0.3
5.5
V
DLY
-0.3
VCC
V
●ELECTRICAL CHARACTERISTICS (Unless otherwise noted, Ta=25℃, VCC=5V)
Limits
Parameter
Symbol
Min.
Typ.
Max.
Bias Current
Icc
5
10
Detected Voltage
491
500
509
VDET
Hysteresis Voltage
VHYS
10
Delay Current
IDLY
150
250
350
PGOOD Output ON Resistance
100
200
RVOUT
PGOODOutput Leak Current
IOUT
0
5
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© 2009 ROHM Co., Ltd. All rights reserved.
Unit
1/8
Unit
μA
mV
mV
nA
Ω
μA
Conditions
IN sweep up
IN sweep down
IN=0.6V
IN=0V
IN=0.6V
2009.04 - Rev.B
Technical Note
BD4140HFV
●Block Diagram
VCC
3
UVLO
The recommended total
resistance value for R1
and R2 is within 300kΩ.
R1
VDD
PGOOD
IN
R3
1
4
DELAY
R2
R3 should be set not to be affected by
leakeage current ( MAX 5 μ A ) and
power current (5mA).
0.5V
DLY
Please set C1 with
double of MIN Delay
Time.
5
C1
2
GND
●Pin Layout
PGOOD
1
GND
2
VCC
3
5
DLY
4
IN
●Pin Function Table
PIN No.
PIN Name
1
PGOOD
2
GND
Ground Pin
3
Vcc
Power Supply Input Pin
4
IN
5
DLY
Capacitor connected pin for setting delay time
Bottom
FIN
Substrate
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PIN Function
Reset Output Pin (Power Good Signal)
Watching Voltage Input Pin
2/8
2009.04 - Rev.B
Technical Note
BD4140HFV
●Explanation of Operation
BD4140HFV is 1ch reset IC with independent supply voltage.
The following voltage is available to input VCC voltage before the watching input voltage.
(Input-output voltage characteristic)
(in case VCC=5V)
VCC [V]
5
0
0.5
IN [V]
IN [V]
(Detected delay time setting)
TDELAY is calculated with formula below.
HYS=10mV(TYP)
0.5
t
0
CEXT [μF]×0.5
TDELAY [sec] =
0.25 [μA]
DLY [V]
= 2×CEXT[pF]×10-6
CEXT [pF] = TDELAY [sec] / (2×10-6)
0.5
t
TDELAY
(Example) When using the 4700pF capacitor,
-6
TDELAY [sec] = 2×4700 [pF]×10
PGOOD [V]
-6
= 9400×10 = 9.4 [ms]
t
(Example) When setting 2ms Delay,
CEXT = 2 [ms] ×0.25 [uA] / 0.5
=
-3
-6
2×10 × 0.25×10
0.5
= 1×10-9
= 1000[pF]
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3/8
2009.04 - Rev.B
Technical Note
BD4140HFV
① When VCC is below the minimum operation voltage, PGOOD pin will be at H level.
(The meaning of the minimum operation voltage is : When the starting of VCC, PGOOD output voltage become
within 10% of VCC voltage, and the value will be around 0.8VTYP(RPGOOD=100kΩ) and 1.0VTYP(RPGOOD=10kΩ).
But note that this value is reference.)
② If VCC value exceeds the minimum operation voltage, by the VCC reached UVLO cancellation voltage (2.5V TYP),
PGOOD output become at L level.
③ If VCC exceeds UVLO cancellation voltage, when the input voltage of IN pin is over the detected voltage, PGOOD pin
will be at H level, and when the input voltage of IN pin is below the detected voltage, PGOOD pin will be at L level.
(PGOOD=OK)
UVLO Cancellation voltage
VCC [V]
5
2.5
RPGOOD
VCC
VCC
1(0.8)
0
t
PGOOD
PGOOD [V]
IN
DLY
GND
t
(PGOOD=NG)
VCC [V]
5
RPGOOD
VCC
VCC
1(0.8)
0
PGOOD
t
PGOOD [V]
IN
DLY
GND
t
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4/8
2009.04 - Rev.B
Technical Note
BD4140HFV
●Evaluation Board Circuit
■ BD4140HFV
(The direction is ※When you order , please order in times the amount of package quantity.
R1
U1
BD4140HFV
R4
VCC
3
PGOOD
PGOOD
VCC
1
C1
C4
DLY
5
IN
C2
GND
2
GND
R2
IN
4
C3
R3
■ BD4140HFV Evaluation Board Standard Component List (at detecting 0.5V)
Component
Rating
Manufacturer
Product Name
Component
Rating
Manufacturer
U1
-
ROHM
BD4140HFV
R1
100kΩ
ROHM
Product Name
C1
-
-
-
R2
0Ω
-
jumper
C2
1000pF
murata
GRM1552C1H102JA01
R3
-
-
-
C3
-
-
-
R4
0Ω
-
jumper
C4
-
-
-
■ BD4140HFV Evaluation Board Layout
Silk screen (Top)
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TOP Layer
5/8
Bottom Layer
2009.04 - Rev.B
Technical Note
BD4140HFV
●Operation Notes
1. Absolute maximum ratings
An excess in the absolute maximum ratings, such as supply voltage, temperature range of operating conditions, etc., can
break down the devices, thus making impossible to identify breaking mode, such as a short circuit or an open circuit. If any
over rated values will expect to exceed the absolute maximum ratings, consider adding circuit protection devices, such as
fuses.
2. Power supply lines
Please add a protection diode when a large inductance component is connected to the output terminal, and
reverse-polarity power is possible at startup or in output OFF condition.
(Example)
OUTPUT PIN
3. GND voltage
The potential of GND pin must be minimum potential in all operating conditions.
4. Inter-pin shorts and mounting errors
Use caution when positioning the IC for mounting on printed circuit boards. The IC may be damaged if there is any
connection error or if pins are shorted together.
5. Actions in strong electromagnetic field
Use caution when using the IC in the presence of a strong electromagnetic field as doing so may cause the IC to
malfunction.
6. Testing on application boards
When testing the IC on an application board, connecting a capacitor to a pin with low impedance subjects the IC to stress.
Always discharge capacitors after each process or step. Always turn the IC's power supply off before connecting it to or
removing it from a jig or fixture during the inspection process. Ground the IC during assembly steps as an antistatic
measure. Use similar precaution when transporting or storing the IC.
7. Regarding input pin of the IC
This monolithic IC contains P+ isolation and P substrate layers between adjacent elements in order to keep them isolated.
P-N junctions are formed at the intersection of these P layers with the N layers of other elements, creating a parasitic diode
or transistor. For example, the relation between each potential is as follows:
When GND > Pin A and GND > Pin B, the P-N junction operates as a parasitic diode.
When GND > Pin B, the P-N junction operates as a parasitic transistor.
Parasitic diodes can occur inevitable in the structure of the IC. The operation of parasitic diodes can result in mutual
interference among circuits, operational faults, or physical damage. Accordingly, methods by which parasitic diodes
operate, such as applying a voltage that is lower than the GND (P substrate) voltage to an input pin, should not be used.
Resistor
Transistor (NPN)
Pin A
Pin B
C
Pin B
B
E
Pin A
N
P
+
N
P
P
N
+
N
Parasitic
element
P+
P substrate
Parasitic element
GND
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B
N
P
P
C
+
N
E
Parasitic
element
P substrate
Parasitic element
6/8
GND
GND
GND
Other adjacent elements
2009.04 - Rev.B
Technical Note
BD4140HFV
●Power Dissipation Characteristics
◎HVSOF5
[W]
1
PCB size:70mm×70mm×1.6mmt
①board:1 layer board(copper foil density : 2%)
Power Dissipation [Pd]
0.8
①0.67W
0.6
0.4
0.2
0
25
50
75
100
Ambient Temperature [Ta]
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© 2009 ROHM Co., Ltd. All rights reserved.
125
150
[℃]
7/8
2009.04 - Rev.B
Technical Note
BD4140HFV
●Ordering part number
B
D
4
Part No.
1
4
0
H
Part No.
F
V
-
Package
FV : HVSOF5
T
R
Packaging and forming specification
TR: Embossed tape and reel
HVSOF5
1.0±0.05
3000pcs
4
4
(0.91)
5
0.2MAX
Embossed carrier tape
Quantity
(0.05)
Tape
(0.3)
5
(0.41)
1.6±0.05
(0.8)
Direction
of feed
TR
The direction is the 1pin of product is at the upper right when you hold
( reel on the left hand and you pull out the tape on the right hand
)
3 2 1
1 2 3
1pin
0.13±0.05
S
+0.03
0.02 –0.02
0.6MAX
1.2±0.05
(MAX 1.28 include BURR)
1.6±0.05
0.1
S
0.5
0.22±0.05
0.08
Direction of feed
M
Reel
(Unit : mm)
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8/8
∗ Order quantity needs to be multiple of the minimum quantity.
2009.04 - Rev.B
Datasheet
Notice
Precaution on using ROHM Products
1.
Our Products are designed and manufactured for application in ordinary electronic equipments (such as AV equipment,
OA equipment, telecommunication equipment, home electronic appliances, amusement equipment, etc.). If you
(Note 1)
, transport
intend to use our Products in devices requiring extremely high reliability (such as medical equipment
equipment, traffic equipment, aircraft/spacecraft, nuclear power controllers, fuel controllers, car equipment including car
accessories, safety devices, etc.) and whose malfunction or failure may cause loss of human life, bodily injury or
serious damage to property (“Specific Applications”), please consult with the ROHM sales representative in advance.
Unless otherwise agreed in writing by ROHM in advance, ROHM shall not be in any way responsible or liable for any
damages, expenses or losses incurred by you or third parties arising from the use of any ROHM’s Products for Specific
Applications.
(Note1) Medical Equipment Classification of the Specific Applications
JAPAN
USA
EU
CHINA
CLASSⅢ
CLASSⅡb
CLASSⅢ
CLASSⅢ
CLASSⅣ
CLASSⅢ
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[a] Installation of protection circuits or other protective devices to improve system safety
[b] Installation of redundant circuits to reduce the impact of single or multiple circuit failure
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[b] Use of our Products outdoors or in places where the Products are exposed to direct sunlight or dust
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H2S, NH3, SO2, and NO2
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[f] Sealing or coating our Products with resin or other coating materials
[g] Use of our Products without cleaning residue of flux (even if you use no-clean type fluxes, cleaning residue of
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[h] Use of the Products in places subject to dew condensation
4.
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5.
Please verify and confirm characteristics of the final or mounted products in using the Products.
6.
In particular, if a transient load (a large amount of load applied in a short period of time, such as pulse. is applied,
confirmation of performance characteristics after on-board mounting is strongly recommended. Avoid applying power
exceeding normal rated power; exceeding the power rating under steady-state loading condition may negatively affect
product performance and reliability.
7.
De-rate Power Dissipation (Pd) depending on Ambient temperature (Ta). When used in sealed area, confirm the actual
ambient temperature.
8.
Confirm that operation temperature is within the specified range described in the product specification.
9.
ROHM shall not be in any way responsible or liable for failure induced under deviant condition from what is defined in
this document.
Precaution for Mounting / Circuit board design
1.
When a highly active halogenous (chlorine, bromine, etc.) flux is used, the residue of flux may negatively affect product
performance and reliability.
2.
In principle, the reflow soldering method must be used; if flow soldering method is preferred, please consult with the
ROHM representative in advance.
For details, please refer to ROHM Mounting specification
Notice - GE
© 2014 ROHM Co., Ltd. All rights reserved.
Rev.002
Datasheet
Precautions Regarding Application Examples and External Circuits
1.
If change is made to the constant of an external circuit, please allow a sufficient margin considering variations of the
characteristics of the Products and external components, including transient characteristics, as well as static
characteristics.
2.
You agree that application notes, reference designs, and associated data and information contained in this document
are presented only as guidance for Products use. Therefore, in case you use such information, you are solely
responsible for it and you must exercise your own independent verification and judgment in the use of such information
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incurred by you or third parties arising from the use of such information.
Precaution for Electrostatic
This Product is electrostatic sensitive product, which may be damaged due to electrostatic discharge. Please take proper
caution in your manufacturing process and storage so that voltage exceeding the Products maximum rating will not be
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isolation from charged objects, setting of Ionizer, friction prevention and temperature / humidity control).
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1.
Product performance and soldered connections may deteriorate if the Products are stored in the places where:
[a] the Products are exposed to sea winds or corrosive gases, including Cl2, H2S, NH3, SO2, and NO2
[b] the temperature or humidity exceeds those recommended by ROHM
[c] the Products are exposed to direct sunshine or condensation
[d] the Products are exposed to high Electrostatic
2.
Even under ROHM recommended storage condition, solderability of products out of recommended storage time period
may be degraded. It is strongly recommended to confirm solderability before using Products of which storage time is
exceeding the recommended storage time period.
3.
Store / transport cartons in the correct direction, which is indicated on a carton with a symbol. Otherwise bent leads
may occur due to excessive stress applied when dropping of a carton.
4.
Use Products within the specified time after opening a humidity barrier bag. Baking is required before using Products of
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1.
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3.
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4.
The proper names of companies or products described in this document are trademarks or registered trademarks of
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Notice - GE
© 2014 ROHM Co., Ltd. All rights reserved.
Rev.002
Datasheet
General Precaution
1. Before you use our Pro ducts, you are requested to care fully read this document and fully understand its contents.
ROHM shall n ot be in an y way responsible or liabl e for fa ilure, malfunction or acci dent arising from the use of a ny
ROHM’s Products against warning, caution or note contained in this document.
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notice. Before purchasing or using ROHM’s Products, please confirm the la test information with a ROHM sale s
representative.
3.
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liable for an y damages, expenses or losses incurred b y you or third parties resulting from inaccur acy or errors of or
concerning such information.
Notice – WE
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Rev.001