Datasheet LTC3035 (Analog Devices) - 10
| Hersteller | Analog Devices |
| Beschreibung | 300mA VLDO Linear Regulator with Charge Pump Bias Generator |
| Seiten / Seite | 12 / 10 — TYPICAL APPLICATIO. Low Noise Li-Ion to 3.3V Supply. Efficiency vs Output … |
| Dateiformat / Größe | PDF / 224 Kb |
| Dokumentensprache | Englisch |
TYPICAL APPLICATIO. Low Noise Li-Ion to 3.3V Supply. Efficiency vs Output Current. Ripple Rejection
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LTC3035
U TYPICAL APPLICATIO Low Noise Li-Ion to 3.3V Supply
0.1µF CBIAS L1 3.4V CP CM 1µF 10µH 600mA S S S IN BIAS CIN 3 4 LTC3035 1µF SW1 SW2 V SHDN OUT OUT = 3.3V S S LTC3440 V I IN = 2.7V TO 4.2V 7 6 OUT ≤ 300mA R1 COUT S V 294k IN VOUT 357k 1µF 8 9 GND ADJ S SHDN/SS FB S C5 1.5nF 40.2k + 2 10 C1 Li-Ion C2 * MODE/SYNC VC S 10µF 22µF R3 1 5 15k RT GND RT R2 *1 = Burst Mode OPERATION 60.4k 200k 0 = FIXED FREQUENCY S S S S S C1: TAIYO YUDEN JMK212BJ106MG C2: TAIYO YUDEN JMK325BJ226MM CIN, CBIAS, COUT: TDK C1005X5R0J105K OFF ON S 3035 TA02 L1: SUMIDA CDRH6D38-100
Efficiency vs Output Current Ripple Rejection
100 90 VIN = 2.7V LTC3440 80 OUTPUT AC 70 Burst Mode® 20mV/DIV OPERATION 60 50 VIN = 4.2V 40 EFFICIENCY (%) VIN = 3.6V LTC3035 30 OUTPUT 20 AC 20mV/DIV 10 3035 TA02c 0 I 20 OUT = 25mA µs/DIV 0.1 1 10 100 1000 OUTPUT CURRENT (mA) 3035 TA02b Burst Mode IS A REGISTERED TRADEMARK OF LINEAR TECHNOLOGY CORPORATION 3035f 10
U TYPICAL APPLICATIO Low Noise Li-Ion to 3.3V Supply
0.1µF CBIAS L1 3.4V CP CM 1µF 10µH 600mA S S S IN BIAS CIN 3 4 LTC3035 1µF SW1 SW2 V SHDN OUT OUT = 3.3V S S LTC3440 V I IN = 2.7V TO 4.2V 7 6 OUT ≤ 300mA R1 COUT S V 294k IN VOUT 357k 1µF 8 9 GND ADJ S SHDN/SS FB S C5 1.5nF 40.2k + 2 10 C1 Li-Ion C2 * MODE/SYNC VC S 10µF 22µF R3 1 5 15k RT GND RT R2 *1 = Burst Mode OPERATION 60.4k 200k 0 = FIXED FREQUENCY S S S S S C1: TAIYO YUDEN JMK212BJ106MG C2: TAIYO YUDEN JMK325BJ226MM CIN, CBIAS, COUT: TDK C1005X5R0J105K OFF ON S 3035 TA02 L1: SUMIDA CDRH6D38-100
Efficiency vs Output Current Ripple Rejection
100 90 VIN = 2.7V LTC3440 80 OUTPUT AC 70 Burst Mode® 20mV/DIV OPERATION 60 50 VIN = 4.2V 40 EFFICIENCY (%) VIN = 3.6V LTC3035 30 OUTPUT 20 AC 20mV/DIV 10 3035 TA02c 0 I 20 OUT = 25mA µs/DIV 0.1 1 10 100 1000 OUTPUT CURRENT (mA) 3035 TA02b Burst Mode IS A REGISTERED TRADEMARK OF LINEAR TECHNOLOGY CORPORATION 3035f 10