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TPS60210DGS 데이터시트(PDF) 2 Page - Texas Instruments |
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TPS60210DGS 데이터시트(HTML) 2 Page - Texas Instruments |
2 / 26 page TPS60210, TPS60211, TPS60212, TPS60213 REGULATED 3.3 V, LOW RIPPLE CHARGE PUMP WITH ULTRALOW OPERATING CURRENT SLVS296 − JUNE 2000 2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 description (continued) Three operating modes can be programmed using the SNOOZE pin. When SNOOZE is low, the device is put into snooze mode. In snooze mode, the device operates with a typical quiescent current of 2 µA while the output voltage is maintained at 3.3 V ±6%. This is lower than the self-discharge current of most batteries. Load current in snooze mode is limited to 2 mA. When SNOOZE is high, the device is put into normal operating mode. During normal operating mode, the device operates in the newly developed linskip mode where it switches seamlessly from the power saving pulse-skip mode at light loads to the low-noise constant-frequency linear-regulation mode once the output current exceeds the linskip current threshold of about 7 mA. In this mode, the device operates from the internal oscillator. The device is synchronized to an external clock signal if SNOOZE is clocked; thus switching harmonics can be controlled and minimized. Only four external capacitors are needed to build a complete low-ripple dc/dc converter. The push-pull operating mode of two single-ended charge pumps assures the low output voltage ripple as charge is continuously transferred to the output. All the devices can start with full load current. The devices include a low-battery detector that issues a warning if the battery voltage drops below a user-defined threshold voltage or a power-good detector that goes active when the output voltage reaches about 90% of its nominal value. This dc/dc converter requires no inductors; therefore, EMI of the system is reduced to a minimum, making it easier to use in designs. It is available in the small 10-pin MSOP package (DGS). DGS PACKAGES 1 2 3 4 5 10 9 8 7 6 LBI GND C1− C1+ OUT LBO SNOOZE C2− IN C2+ TPS60210 TPS60212 1 2 3 4 5 10 9 8 7 6 GND GND C1− C1+ OUT PG SNOOZE C2− IN C2+ TPS60211 TPS60213 AVAILABLE OPTIONS TA PART NUMBER† MARKING DGS PACKAGE OUTPUT CURRENT (mA) OUTPUT VOLTAGE (V) DEVICE FEATURES TPS60210DGS AFD 100 3.3 Low-battery detector −40 °C to 85°C TPS60211DGS AFE 100 3.3 Power-good detector −40 °C to 85°C TPS60212DGS AFF 50 3.3 Low-battery detector TPS60213DGS AFG 50 3.3 Power-good detector † The DGS package is available taped and reeled. Add R suffix to device type (e.g., TPS60210DGSR) to order quantities of 3000 devices per reel. |
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