BZ054B223ZSBBQ AVX Corporation, BZ054B223ZSBBQ Datasheet - Page 22

• Manufacturer Part Number: BZ054B223ZSBBQ
• Description: CAPACITOR SUPER, 0.0022F, 4.5V, 0.17OHM
• Manufacturer: AVX Corporation
• Series: BestCapr

Specifications of BZ054B223ZSBBQ

• Capacitance Tolerance: +80, -20%
• Voltage Rating: 4.5VDC
• Esr: 0.17ohm
• No. Of Pins: 3
• Capacitor Mounting: SMD
• Operating Temperature Range: -20°C To +70°C
• Capacitance: 2200µF
• Termination Type: Solder
• Rohs Compliant: Yes
• Filter Terminals: Solder
• External Depth: 2.1mm
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

BestCap
High Power Pulse Supercapacitors
BestCap
• Substantially lower voltage drop for pulse durations of up
• Substantially lower voltage drop at cold temperatures
• Discharge current limited only by the ESR of the capacitor
The following analysis compares a primary battery connect-
ed in parallel to a Lithium Tionil Chloride, to the same
primary battery connected to a BestCap
Various current pulses (amplitude and duration) are applied
in each case.
BestCap
BestCap
250mA / 1msec
500mA / 1msec
750mA / 1msec
200mA / 100msec at –20°C
250mA / 100msec
500mA / 100msec
750mA / 100msec
1500mA / 1msec
1500mA / 100msec
750mA / 100msec at –20°C
Maximum discharge current
(single pulse)
Number of Cycles
Primary
Battery
to 100msec.
(–20°C).
Characteristics
Additional
®
Pulse
Pulse
Supercapacitor benefits to the designer are:
®
®
5.5V 100mF
3.5V 560mF
Design using BestCap
BestCap
®
®
Ultra-low ESR
BestCap
BestCap
Drop (mV)
Drop (mV)
BestCap
Not limited
Not limited
Voltage
Voltage
®
®
Supercapacitors
Supercapacitors
232
100
152
305
172
Equipment Requiring
25
50
75
50
43
High Current Pulses
Battery Powered
®
®
®
:
Supercapacitor.
Rechargeable
rechargeable battery
rechargeable battery
(to retain 80%
5A Maximum
40K to 400K
Drop (mV)
Drop (mV)
capacity)
Voltage
Voltage
Battery
150
220
150
470
190
350
190
220
350
470
THE SOLUTION:
(1) Calculation:
* V=V
** V=V
4.4 BESTCAP FOR GSM/GPRS PCMCIA MODEMS
There is an increasing usage of PCMCIA modem cards for
wireless LAN and WAN (Wide Area Network) applications.
The PCMCIA card is used as an accessory to Laptops and
PDA’s, and enables wide area mobile Internet access,
including all associated applications like Email and file
transfer.
With the wide spread use of GSM networks, a PCMCIA
GSM modem is a commonly used solution. To achieve
higher speed data rates, GSM networks are now being
upgraded to support the GPRS standard.
The design challenge:
GSM/GPRS transmission requires a current of approximate-
ly 2A for the pulse duration. The PCMCIA bus cannot supply
this amount of pulsed current. Therefore, there is a need for
a relatively large capacitance to bridge the gap.
The capacitor supplies the pulse current to the transmitter,
and is charged by a low current during the interval between
pulses.
Working Voltage (V)
Rated Capacitance
Voltage Drop** (V)
@ 0.5msec Pulse
Voltage Drop* (V)
(25% duty cycle)
Capacitance
GPRS Pulse
GSM Pulse
(milli Farad)
(milli Farad)
(milli ohm)
Size (mm)
V
PCMCIA bus
1
+
ESR
1
+V
from
+V
Current
Voltage
2
2
=1.5A*ESR + (1.5A*0.577msec)/C
=1.5A*ESR + (1.5A*1.154msec)/C
Chip Tantalum
7.2 x 6.3 x 3.8
SOLUTION A
2 Ampere
Capacitor
1.75
6.3
0.9
30
1
1
BZ014C353ZSB BZ055B353ZSB
BestCap
28 x 17 x 2
Transmitter
0.23
0.28
120
4.5
35
17
SOLUTION B
®(1)
20 x 15 x 4.2
BestCap
0.21
0.26
110
5.5
35
17
®(1)
21