View DS9503_4551531.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

19-4699; 7/09
DS9503 ESD Protection Diode with Resistors
www.maxim-ic.com
SPECIAL FEATURES
Zener characteristic with voltage snap-back to protect against ESD hits High avalanche voltage, low leakage and low capacitance avoid signal attenuation Compatible to all 5V logic families Space saving, low inductance TSOC surface mount package
SYMBOL AND CONVENTIONS
C IC VCA A
PACKAGE OUTLINE
TSOC SURFACE MOUNT PACKAGE
1
6 5 4 SIDE VIEW
On-chip 5resistors for isolation at both anode and cathode terminals Industrial temperature range
2 3
TOP VIEW
ORDERING INFORMATION
DS9503P+ DS9503P+T&R 6-lead TSOC package 6-lead TSOC package
+Denotes a lead(Pb)-free/RoHS-compliant package. T&R = Tape and reel.
DESCRIPTION
This DS9503 is designed as an ESD protection device for 1-Wire MicroLAN interfaces. In contrast to the DS9502, the DS9503 includes two 5isolation resistors on chip. Although 5are negligible during communication, they represent a high impedance relative to the conducting diode during an ESD event. Thus, the diode absorbs the energy while the resistors further isolate and protect the circuit at the other side of the package. If used with circuits that already have a strong ESD-protection at their I/O port, the ESD protection level is raised to more that 27 kV (IEC 801-2 Reference model). In case of abnormal ESD hits beyond its maximum ratings the DS9503 will eventually fail "short" thus preventing further damage. During normal operation the DS9503 behaves like a regular Zener Diode. When the voltage exceeds the trigger voltage, the I/V characteristic of the device will "snapback" allowing the same or higher amount of current to flow, but at a significantly lower voltage. As long as a minimum current or voltage is maintained, the device will stay in the "snapback mode". If the voltage or the current falls below the holding voltage or holding current, the device will abruptly change to its normal mode and conduct only a small leakage current. 1 of 3
DS9503
DC CHARACTERISTICS Figure 1
IC/A 1.0 0.8 0.6 0.4 SEE DETAIL DRAWING 0.2 I-TRIGGER
1
2
3
4
5
6
7
8
9 VAV
10
11
VCA/V
V-TRIGGER
DC CHARACTERISTICS DETAIL DRAWING Figure 2
TEST PULSE WAVEFORM Figure 3
TYPICAL APPLICATION Figure 4
2 of 4
DS9503
ABSOLUTE MAXIMUM RATINGS*
Operating Temperature Storage Temperature Soldering Temperature Continuous DC Current Through Package -40C to +85C -55C to +125C 260C for 10 seconds 80 mA
This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operation sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods of time may affect reliability
ELECTRICAL CHARACTERISTICS
PARAMETER Leakage Current Avalanche Voltage Trigger Voltage Trigger Current Holding Voltage Holding Current Forward Voltage (-10 mA) Forward Current (-0.7V) Maximum Peak Current Continuous Current Through Diode Isolation Resistance SYMBOL IL VAV VTRIGGER ITRIGGER VHOLD IHOLD VF IF IPP ICC RI 5 5.5 11 -0.7 -10 2.0 80 -0.8 -100 7.4 10 MIN TYP 30 MAX 100 11.05 11 1000
(-40C to +85C)
UNITS nA V V mA V mA V mA A mA NOTES 1 2,3 2, 4 4 2,4 4 5 5 6
CAPACITANCE
PARAMETER Junction Capacitance (5V) Junction Capacitance (0V) SYMBOL CJ5 CJ0 SYMBOL RJC RJA MIN MIN TYP 40 70 TYP MAX 75 200 MAX pF pF
(tA=25C)
UNITS NOTES 2 2 NOTES
THERMAL RESISTANCE
PARAMETER Junction To Package Junction To Ambient UNITS K/W K/W
NOTES:
1. 2. 3. 4. 5. 6. At 7.0V. All voltages are referenced from Cathode to Anode. At 0.3 A. Not production tested, guaranteed by design. Typical values at room temperature. See pulse specification.
3 of 4
DS9503
REVISION HISTORY
REVISION DATE DESCRIPTION Added "lead-free" note to the Ordering Information table. Fixed the X/Y scale in Figure 1. In the Electrical Characteristics table, changed the VAV specification maximum value to 11V; the VTRIGGER specification typical value to 10V and maximum value to 11V; the ITRIGGER specification typical value to a blank; and the IHOLD specification minimum value to an 11mA. Added note 4 ("Not production tested, guaranteed by design") to the VTRIGGER, ITRIGGER, VHOLD, and IHOLD specifications in the Electrical Characteristics table. PAGES CHANGED 1 2 3
072209
3
4 of 4

▲Up To Search▲

Price & Availability of DS9503

	To Download DS9503 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .