LM2631 2005 2631 Dongyan Zhou 19971107 24060

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LM2631 2005 2631 Dongyan Zhou 19971107 24060

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LM2631
2005
2631
Dongyan Zhou
19971107
24060
ds100937
Rreleased Converted nat2000 DTD. edited some values under abs.max, elec. table features Dongyan changed typical value from elec. table. fixed some typos. recomposed after fixing some typos. made some minor fixes. composed after load. added couple divisions some changes from Dongyan composed released. latest file from composed with more edits. composed with changes from waiting art7 load. more edits from composed 3/23 100937-14 missing from database. Added typical curves have composed version. still composing version rest changes. Made additional changes Shantha preview. composed 1/13/97 Made changes additions prview, copy Dongyan.
LM2631
LM2631
LM2631 DC/DC MOSFET MOSFET 200kHz 400kHz FPWM HIGH PGOOD
4.5V (1.5V
200kHz 400kHz
1.24V
0.8mA
TSSOP
20050707
National Semiconductor Corporation
DS100937-06-JP
LM2631
(Note
(Note (Note
PGND SGND CBOOT CSHCSL FPWMSYNC )(Note 0.3V 0.3V 0.3V 0.3V 0.3V 0.3V 720mW
(TJ) 4.5V
10VGND PGND (Note
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LM2631
10VGND PGND (Note
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LM2631
10VGND PGND (Note
Note Note
TJmax PDmax (TJmax TA)/ 720mW TJmaxTA TSSOP LM2631 Packaging Databook 100pF 1.5k FADJ 2.94 FADJGND 350k
Note Note Note Note Note Note Note
Efficiency Load Current (FPWM Low, VOUT 3.3V) Efficiency (FPWM High, Input Voltage VOUT= 2.9V)
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LM2631
Quiscent Supply Current Supply Voltage (Not Switching, FPWM Low, VOUT 2.0V) Quiscent Supply Current Supply Voltage (FPWM Low, VOUT 3.3V)
Supply Current Oscillator Frequency (FPWM High)
Oscillator Frequency Adjusting Resistor
Oscillator Frequency Junction Temperature
Reference Voltage Junction Temperature
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LM2631
20-Lead TSSOP (MTC)
View Order Number LM2631MTC-ADJ Package Number MTC20
SYNC PGOOD PGOOD PGOOD HIGH FPWM HIGH MOSFET HDRV
COMP FADJ VREF FPWM PGND LDRV CBOOT HDRV
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LM2631
FIGURE LM2631 Block Diagram
(Figure FPWM 100nsec) FPWM
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LM2631
LM2631
1.238V VREF 220pF VREF
(FADJ) SYNC
0.025 MDOWN RSEN VOUT/L) FADJ 200kHz FADJ 200kHz 400kHz CMOS SYNC
FPWM FPWM 25mV 25mV
110mV MOSFET 1.5V MOSFET MOSFET 120% 3.5V
(LREG)
HIGH 0.6V 1.3V LM2631 4096/FS)
Figure MOSFET) 5.5V) MOSFET CBOOT (VIN
LM2631 VREF PGOOD
LM2631
LM2631 (pin13) LM2631 MOSFET
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LM2631
MOSFET
MOSFET MOSFET
MOSFET MOSFET 200nsec)
VOUT VREF(1 R1/R2) VREF 1.238V 100k
MOSFET
(IOUT/2) 2VOUT (0.1
MOSFET (PGND CSHCSL (HDRV LDRV MOSFET
COUT FPWM
OS-CON Sprague 593D594D
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LM2631
Figure Table
FIGURE Typical 2.5V Application Circuit
TABLE Components Typical 2.5V, 300kHz Application Circuits
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LM2631
millimeters
20-Lead TSSOP (MTC) Order Number LM2631MTC-ADJ Package Number MTC20
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CSP-9-111C2(Customer Products Stewardship Specification) CSP-9-111S2(Banned Substances Materials Interest Specification) CSP-9-111S2 RoHS
135-0042 2-17-16 TEL.(03)5639-7300
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LM2631 2005 2631 Dongyan Zhou 19971107 24060

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