rt9501 Richtek Technology Corporation, rt9501 Datasheet
rt9501
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rt9501 Summary of contents
Page 1
... Advanced Lithium-Ion Linear Battery Charger General Description The RT9501 is a single Lithium-Ion or Lithium-Polymer cell linear battery charger which is designed for compact and cost-sensitive handheld devices. It combines charge status indication, charge termination, battery temperature monitoring, and high accuracy current and voltage regulation in a MSOP-8 package. ...
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... RT9501A/B Typical Application Circuit GND V IN GND www.richtek.com FB/ BATT 1 VDD TS 4 GND STAT C1 0.1uF Figure 1. Application circuit using P-Channel MOSFET FB/ BATT 1 VDD TS 4 GND STAT C1 0.1uF Figure 2. Application circuit using PNP transistor ...
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... Battery Voltage input. Input directly from battery voltage. Function Block Diagram BATT VDD TS FB/CE DS9501A/B-08 October 2008 - Sleep Mode Detection + VDD TS1 Trip - + TS2 Trip - Control + Logic Internal FB Feedback Determination & Enable Control FB2 RT9501A/B FB2 CC Control - REF1 - FB2 REF2 Control - FB2 V + REF3 Precharge - FB2 ...
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... BATT − V ≥ 0.2V V BATT DD − 5V BATT − 5V BATT − 5V BATT RT9501A V O(REG) RT9501B – V I(SNS) I(SNS (TERM) V TS1 V TS2 V O(MIN) V (PRE) V O(RCH) Min Typ -- 1.5 ≥ 0. ≥ 0. ≥ ...
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... Note 2. Devices are ESD sensitive. Handling precaution is recommended. Note 3. The device is not guaranteed to function outside its operating conditions. DS9501A/B-08 October 2008 Symbol Test Condition I = 10mA STAT(LOW 5mA STAT(HIGH 5mA ( sink ) CC(LOW) O(CC) Not to exceed power rating I CC(SINK) specification (PD) RT9501A/B Min Typ Max Units -- 0.4 0 –0 1 www.richtek.com V ...
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... And then if a battery is already inserted and the input power source is absent, the RT9501 will enter sleep mode to prevent draining power from battery. When input power source and battery are both existed, another detection is the battery temperature ...
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... This pin has two functions, one is to enable/disable the charge function, and the other is to finely adjust battery regulation voltage. Connect this pin to VDD to enable RT9501, and connect to ground to disable it (Figure 7). If × × this pin is connected to a voltage divider as shown in ...
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... GND Figure 8. For FB pin Function × 2.1 (1+ O(REG) Charge status indication The RT9501 indicates the status of the charger on the 3- state STAT pin. The following table shows the statuses of this pin. Condition In battery charging cycle Charge cycle completed Temperature fault or charge function disable or sleep mode ...
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... MSOP Plastic Package Richtek Technology Corporation Taipei Office (Marketing) 8F, No. 137, Lane 235, Paochiao Road, Hsintien City Taipei County, Taiwan, R.O.C. Tel: (8862)89191466 Fax: (8862)89191465 Email: marketing@richtek.com RT9501A/B L Dimensions In Inches Min Max 0.032 0.043 0.000 0.006 0.030 0.037 ...