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Hi-performance Regulator IC Series for PCs
PGOOD IC for PC
BD4140HFV
No.09030EBT18
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 : 1.6x1.6x0.6(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 ja= 186.6W for increase in Ta of 1 over 25. (when mounted on a board 70.0mmx70mmx1.6mm Glass-epoxy PCB which has 1 layer. (copper foil density :2%)) *3 Reduced by ja= 185.2W for increase in Ta of 1 over 25 (when mounted on a board 70.0mmx70mmx1.6mm Glass-epoxy PCB which has 1 layer.)
Operating Conditions (Ta=25) Parameter
Symbol VCC IN PGOOD DLY
Min. 3.0 -0.3 -0.3 -0.3
Max. 5.5 VCC-2 5.5 VCC
Unit V V V V
Terminal voltage
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
Unit A mV mV nA A
Conditions IN sweep up IN sweep down IN=0.6V IN=0V IN=0.6V
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1/8
2009.04 - Rev.B
BD4140HFV
Block Diagram
VCC 3 UVLO VDD
Technical Note
The recommended total resistance value for R1 and R2 is within 300k.
R1 R2
PGOOD IN 4 DELAY 0.5V 1
R3
R3 should be set not to be affected by leakeage current MAX 5 A and power current 5mA.
Please set C1 with double of MIN Delay Time.
DLY 5 C1 2 GND
Pin Layout
PGOOD
1
5
DLY
GND
2 IN
VCC
3
4
Pin Function Table PIN No. 1 2 3 4 5 Bottom PIN Name PGOOD GND Vcc IN DLY FIN PIN Function Reset Output Pin (Power Good Signal) Ground Pin Power Supply Input Pin Watching Voltage Input Pin Capacitor connected pin for setting delay time Substrate
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2/8
2009.04 - Rev.B
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)
5
Technical Note
VCC [V] 0
0.5
IN [V]
(Detected delay time setting)
IN [V]
0.5 0
HYS=10mV(TYP)
TDELAY is calculated with formula below. TDELAY [sec] = CEXT [F]x0.5 0.25 [A] = 2xCEXT[pF]x10-6
DLY [V]
0.5
CEXT [pF] = TDELAY [sec] / (2x10-6)
TDELAY PGOOD [V]
(Example) When using the 4700pF capacitor, TDELAY [sec] = 2x4700 [pF]x10
-6
-6 = 9400x10 = 9.4 [ms]
(Example) When setting 2ms Delay, CEXT = 2 [ms] x0.25 [uA] / 0.5 =
-3 -6 2x10 x 0.25x10 0.5
= 1x10-9 = 1000[pF]
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3/8
2009.04 - Rev.B
BD4140HFV
Technical Note
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=100k) and 1.0VTYP(RPGOOD=10k). But note that this value is reference.) If VCC value exceeds the minimum operation voltage, by the VCC reached UVLO cancellation voltage (2.5V TYP), PGOOD output become at L level. 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 5 VCC [V] 2.5 1(0.8) 0
VCC VCC IN GND PGOOD DLY
RPGOOD
PGOOD [V]
(PGOOD=NG)
5 VCC [V]
VCC VCC
0
RPGOOD
1(0.8)
IN
PGOOD DLY GND
PGOOD [V]
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4/8
2009.04 - Rev.B
BD4140HFV
Evaluation Board Circuit BD4140HFV
(The direction is When you order , please order in times the amount of package quantity.
Technical Note
R1 U1 BD4140HFV 3 VCC PGOOD 1 C1 PGOOD
VCC
R4
C4
DLY
5 IN
C2 GND 2 GND IN 4
R2
R3
C3
BD4140HFV Evaluation Board Standard Component List (at detecting 0.5V) Component U1 C1 C2 C3 C4 Rating 1000pF Manufacturer ROHM murata Product Name BD4140HFV GRM1552C1H102JA01 Component R1 R2 R3 R4 Rating 100k 0 0 Manufacturer ROHM jumper jumper Product Name
BD4140HFV Evaluation Board Layout
Silk screen (Top)
TOP Layer
Bottom Layer
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5/8
2009.04 - Rev.B
BD4140HFV
Technical Note
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 Pin A Pin A
P
+
Transistor (NPN) Pin B
C B E B P P
+
Pin B
N P P
+
N N
N
Parasitic element
P+
N N
C E
P substrate Parasitic element
GND
P substrate Parasitic element
GND GND GND
Parasitic element
Other adjacent elements
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6/8
2009.04 - Rev.B
BD4140HFV
Power Dissipation Characteristics HVSOF5
[W] 1
PCB size70mmx70mmx1.6mmt board1 layer boardcopper foil density : 2%
Technical Note
0.8 Power Dissipation [Pd]
0.67W
0.6
0.4
0.2
0
25
50
75
100
125
150 []
Ambient Temperature [Ta]
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7/8
2009.04 - Rev.B
BD4140HFV
Ordering part number
Technical Note
B
D
4
Part No.
1
4
0
H
F
V
-
T
R
Part No.
Package FV : HVSOF5
Packaging and forming specification TR: Embossed tape and reel
HVSOF5

1.60.05 (0.8)
0.2MAX
Tape Quantity Direction of feed
Embossed carrier tape 3000pcs TR
The direction is the 1pin of product is at the upper right when you hold
1.20.05 (MAX 1.28 include BURR)
1.00.05
(0.05)
(0.3)
1.60.05
5
4
4
5
(0.91)
(0.41)
( reel on the left hand and you pull out the tape on the right hand
1pin
)
123
321
0.130.05 S
0.6MAX
+0.03 0.02 -0.02
0.1 0.5 0.220.05
S 0.08
M
Direction of feed
(Unit : mm)
Reel
Order quantity needs to be multiple of the minimum quantity.
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8/8
2009.04 - Rev.B
Notice
Notes
No copying or reproduction of this document, in part or in whole, is permitted without the consent of ROHM Co.,Ltd. The content specified herein is subject to change for improvement without notice. The content specified herein is for the purpose of introducing ROHM's products (hereinafter "Products"). If you wish to use any such Product, please be sure to refer to the specifications, which can be obtained from ROHM upon request. Examples of application circuits, circuit constants and any other information contained herein illustrate the standard usage and operations of the Products. The peripheral conditions must be taken into account when designing circuits for mass production. Great care was taken in ensuring the accuracy of the information specified in this document. However, should you incur any damage arising from any inaccuracy or misprint of such information, ROHM shall bear no responsibility for such damage. The technical information specified herein is intended only to show the typical functions of and examples of application circuits for the Products. ROHM does not grant you, explicitly or implicitly, any license to use or exercise intellectual property or other rights held by ROHM and other parties. ROHM shall bear no responsibility whatsoever for any dispute arising from the use of such technical information. The Products specified in this document are intended to be used with general-use electronic equipment or devices (such as audio visual equipment, office-automation equipment, communication devices, electronic appliances and amusement devices). The Products specified in this document are not designed to be radiation tolerant. While ROHM always makes efforts to enhance the quality and reliability of its Products, a Product may fail or malfunction for a variety of reasons. Please be sure to implement in your equipment using the Products safety measures to guard against the possibility of physical injury, fire or any other damage caused in the event of the failure of any Product, such as derating, redundancy, fire control and fail-safe designs. ROHM shall bear no responsibility whatsoever for your use of any Product outside of the prescribed scope or not in accordance with the instruction manual. The Products are not designed or manufactured to be used with any equipment, device or system which requires an extremely high level of reliability the failure or malfunction of which may result in a direct threat to human life or create a risk of human injury (such as a medical instrument, transportation equipment, aerospace machinery, nuclear-reactor controller, fuel-controller or other safety device). ROHM shall bear no responsibility in any way for use of any of the Products for the above special purposes. If a Product is intended to be used for any such special purpose, please contact a ROHM sales representative before purchasing. If you intend to export or ship overseas any Product or technology specified herein that may be controlled under the Foreign Exchange and the Foreign Trade Law, you will be required to obtain a license or permit under the Law.
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