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Details, datasheet, quote on part number:ZXSC410
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Datasheet text preview:
ZXSC410 ZXSC420
VOLTAGE MODE BOOST CONVERTER
DESCRIPTION
The ZXSC410 is voltage mode boost converter in SOT23-6 package. Its excellent load and line regulation means that for the full supply range from lithium Ion cells, the output voltage will typically change by less than 1%. Using high efficiency Zetex switching transistors allow output voltages of tens of volts depending on the selected transistor. The ZXSC420 includes a battery low indicator. This operates by indicating when the converter is no longer able to maintain the regulated output voltage rather than setting a preset threshold, thereby making it suitable for various battery options and load currents.
FEATURES
· 1.65V to 8V supply range · Typical output regulation of ±1% · Over 85% typical efficiency · Output currents up to 300mA · 4.5 A typical shutdown current ZXSC410 · End of regulation output ZXSC420
S O T 2 3 -6
ORDERING INFORMATION
DEVICE ZXSC410E6TA ZXSC420E6TA REEL SIZE 7"
7"
TAPE WIDTH 8mm 8mm
QUANTITY PER REEL 3000 units 3000 units
APPLICATIONS
· System power for battery portable products · LCD bias · Local voltage conversion
TYPICAL APPLICATIONS DIAGRAM
L1 VIN
ZHCS1000
D1 VOUT
C1 Q1 U1
V CC DRIVE STDN SENSE GND V FB
FMMT617
R2 C2
ZXSC410
R1
R3
DEVICE MARKING
· C410 ZXSC410 · C420 ZXSC420
ISSUE 2 - May 2003 1
SEMICONDUCTORS
ZXSC410 ZXSC420
ABSOLUTE MAXIMUM RATINGS
VCC DRIVE EOR STDN VFB, SENSE Operating Temp. Storage Temp. Power Dissipation -0.3V to -0.3V to -0.3V to -0.3V to -0.3V to -40°C to -55°C to 450mW +10V VCC + 0.3V VCC + 0.3V The lower of (+5.0V) or (VCC + 0.3V) The lower of (+5.0V) or (VCC + 0.3V) +85°C +125°C * (ZXSC420 only) * (ZXSC410 only)
ELECTRICAL CHARACTERISTICS
Test Conditions VCC= 3V, T= -40°C to 85°C unless otherwise stated.
Symbol Parameter Conditions Min Supply parameters VCC Iq1 ISTDN Eff2 AccREF TCOREF TDRV FOSC VSENSE ISENSE VFB IFB2 VIH VIL dVLN IOUT3 IDRIVE VDRIVE CDRIVE VOHEOR VOLEOR TEOR dILD
Note
1 2 Excluding gate/base drive current. 3 IFB is typically half of these values at
Limits Typ Max
Units
VCC Range Quiescent Current Shutdown Current VCC = 8V
1.8
8 220 4.5
V A A %
Efficiency Reference tolerance Reference Temp Co Discharge pulse width Operating Frequency
50mA > IOUT > 300mA 1.8V < VCC < 8V 1.8V < VCC < 8V -3.0
85 3.0 0.005 1.7 200
% %/ C s kHz
Input parameters sense voltage sense input current Feedback voltage Feedback input current Shutdown high voltage Shutdown low voltage Line voltage regulation VFB=0V;VSENSE=0V TA = 25°C VFB=0V;VSENSE=0V 22 -1 291 -1.2 1.5 0 0.5 1 28 -7 300 34 -15 309 -4.5 VCC 0.55 V V %/V mV A mV A
Output parameters Output current Transistor drive current Transistor voltage drive Mosfet gate drive cpbty EOR Flag output high EOR Flag output low EOR delay time Load current regulation IEOR = -300nA IEOR = 1mA TA = 25°C 2.5 0 70 195 VIN > 2V, VOUT = VIN VDRIVE = 0.7V 1.8V < VCC < 8V 300 2 0 300 VCC 1.15 250 0.01 3.4 5 VCC-0.4 mA mA V pF V V s %mA
3V System not device spec, including recommended transistors.
ISSUE 2 - May 2003
SEMICONDUCTORS
2
ZXSC410 ZXSC420
TYPICAL CHARACTERISTICS
ISSUE 2 - May 2003 3
SEMICONDUCTORS
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