ADP8861ACPZ-R7 Analog Devices Inc, ADP8861ACPZ-R7 Datasheet
ADP8861ACPZ-R7
Specifications of ADP8861ACPZ-R7
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ADP8861ACPZ-R7 Summary of contents
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FEATURES Charge pump with automatic gain selection of 1×, 1.5×, and 2× for maximum efficiency 7 independent, programmable LED drivers 7 drivers capable (typical) 1 driver also capable (typical) Programmable maximum current limit (128 ...
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ADP8861 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 Typical Operating Circuit ................................................................ 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications ..................................................................................... Timing Diagram .................................................................... 4 Absolute Maximum Ratings ............................................................ 5 Maximum Temperature ...
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SPECIFICATIONS VIN = 3.6 V, SCL = 2.7 V, SDA = 2.7 V, nINT = open, nRST = 2 typical values are 25°C and are not guaranteed, minimum and maximum limits are guaranteed from T ...
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ADP8861 Parameter FAULT PROTECTION Start-Up Charging Current Source Output Voltage Threshold Exit Soft Start Short-Circuit Protection Output Overvoltage Protection Activation Level OVP Recovery Hysteresis Thermal Shutdown Threshold Hysteresis Isolation from Input to Output During Fault Time to Validate a Fault ...
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ABSOLUTE MAXIMUM RATINGS Table 2. Parameter VIN, VOUT D1, D2, D3, D4, D5, D6, and D7 nINT, nRST, SCL, and SDA Output Short-Circuit Duration Operating Temperature Range Ambient ( Junction ( Storage Temperature Range Soldering Conditions ...
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ADP8861 PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS TOP VIEW (Not to Scale SCL 5 nRST NOTES 1. CONNECT THE EXPOSED PADDLE TO GND1 AND/OR GND2. Figure 3. LFCSP Pin Configuration Table 4. Pin Function ...
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TYPICAL PERFORMANCE CHARACTERISTICS VIN = 3.6 V, SCL = 2.7 V, SDA = 2.7 V, nRST = 2 25°C, unless otherwise noted LOAD OUT 1.8 1.6 1.4 1.2 1.0 0.8 0.6 ...
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ADP8861 3. 30mA D1: 0.2 0.4 0.6 0.8 1.0 1.2 V (V) HR Figure 11. Typical Diode Current vs. Current Sink Headroom Voltage ( ...
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GAIN = 2× 5 10mA OUT 5.3 5.2 5.1 5.0 4.9 4.8 4.7 4.6 4.5 –40 – JUNCTION TEMPERATURE (°C) Figure 17. Typical Regulated Output Voltage (V 6.0 5.8 OVP THRESHOLD ...
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ADP8861 T V (AC-COUPLED) 50mV/DIV (AC-COUPLED) 50mV/DIV OUT 2 I (AC-COUPLED) 10mA/DIV 1µ 1µ 1µ 1µF IN OUT 120mA OUT Figure ...
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THEORY OF OPERATION The ADP8861 provides a powerful charge pump driver with programmable LED control seven LEDs can be indepen- dently driven (typical) each. The seventh LED can also be driven ...
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ADP8861 POWER STAGE Because typical white LEDs require drive them, some form of boosting is required over the typical variation in battery voltage. The ADP8861 accomplishes this with a high efficiency charge pump capable of ...
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Soft Start Feature At startup (either from UVLO activation or fault/standby recovery), the output is first charged by I until it reaches about 92 This soft start feature reduces IN the inrush current that is otherwise present ...
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ADP8861 BACKLIGHT OPERATING LEVELS The backlight can be operated at either the maximum level (Register 0x09) or the dim level (Register 0x0A). The backlight maximum and dim current settings are determined by a 7-bit code programmed by the user into ...
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LINEAR 20 15 SQUARE 0.25 0.50 UNIT FADE TIME Figure 30. Comparison of the Dimming Transfers Laws BACKLIGHT TURN ON/TURN OFF/DIM With the device in active mode (nSTBY = 1), the backlight can be ...
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ADP8861 The dim timer and off timer can be used together for sequential maximum-to-dim-to-off functionality. With both the dim and off timers programmed, and BL_EN asserted, the backlight turns on to its maximum setting, and when the dim timer expires, ...
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OVERVOLTAGE PROTECTION Overvoltage protection (OVP) is implemented on the output. There are two types of overvoltage events: normal (no fault) and abnormal (from a fault or sudden load change). Normal Overvoltage In a normal (no fault) overvoltage, the output voltage ...
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ADP8861 1 VOUT < V – OVP V OVP(HYS) 0 VOUT > V OVP FAULT 1 1 VOUT < V – OVP V (HYS) OVP 0 VOUT > V OUT(REG) OVP FAULT 1 TRY TO REGULATE VOUT ...
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APPLICATIONS INFORMATION The ADP8861 allows the charge pump to operate efficiently with a minimum of external components. Specifically, the user must select an input capacitor (C ), output capacitor (C IN and two charge pump fly capacitors (C1 and C2). ...
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ADP8861 EXAMPLE CIRCUITS VIN nRST SDA SCL nINT V IN VDDIO R1 R2 nRST CONTROL SIGNALS nINT 1µF VDDIO VDDIO ADP8861 VDDIO VDDIO GND1 GND2 Figure 40. Generic Application Schematic ACCESSORY ...
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I C PROGRAMMING AND DIGITAL CONTROL 2 The ADP8861 provides full software programmability to facilitate its adoption in various product architectures. The default I address is 0101010x ( during write during read). There- fore, the ...
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ADP8861 Table 7. Register Set Definitions Address (Hex) Register Name 0x00 MFDVID 0x01 MDCR 0x02 MDCR2 0x03 INTR_EN 0x04 CFGR 0x05 BLSEN 0x06 BLOFF 0x07 BLDIM 0x08 BLFR 0x09 BLMX 0x0A BLDM 0x0B to 0x0E Reserved 0x0F ISCFR 0x10 ISCC ...
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Table 8. Register Map Address Register (Hex) Name Bit 7 Bit 6 0x00 MFDVID 0x01 MDCR Reserved INT_CFG 0x02 MDCR2 0x03 INTR_EN 0x04 CFGR 0x05 BLSEN Reserved D7EN 0x06 BLOFF Reserved 0x07 BLDIM Reserved 0x08 BLFR 0x09 BLMX Reserved 0x0A ...
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ADP8861 Manufacturer and Device ID (MFDVID)—Register 0x00 Multiple device revisions are tracked by the device ID field. This is a read-only register. Table 9. MFDVID Bit Map Bit 7 Bit 6 Bit 5 Manufacturer Mode Control Register ...
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Mode Control Register 2 (MDCR2)—Register 0x02 Table 12. MDCR2 Bit Map Bit 7 Bit 6 Bit 5 Reserved Table 13. Bit Descriptions for the MDCR2 Register Bit Name Bit No. Description N/A [7:5] Reserved SHORT_INT 4 Short-circuit error interrupt. 1 ...
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ADP8861 BACKLIGHT REGISTER DESCRIPTIONS Configuration Register (CFGR)—Register 0x04 Table 16. CFGR Bit Map Bit 7 Bit 6 Table 17. Bit Descriptions for the CFGR Register Bit Name Bit No. Description N/A [7:3] Reserved Law [2:1] Backlight transfer law 00 = ...
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Backlight Off Timeout (BLOFF)—Register 0x06 Table 20. BLOFF Bit Map Bit 7 Reserved Table 21. Bit Descriptions for the BLOFF Register Bit Name Bit No. Description N/A 7 Reserved. OFFT [6:0] Backlight off timeout. After the off timeout (OFFT) period, ...
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ADP8861 Backlight Fade (BLFR)—Register 0x08 Table 24. BLFR Bit Map Bit 7 Bit 6 Bit 5 BL_FO Table 25. Bit Descriptions for the BLFR Register Bit Name Bit No. Description BL_FO [7:4] Backlight fade out rate. If fade out is ...
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Backlight Maximum Current Register (BLMX)—Register 0x09 Table 26. BLMX Bit Map Bit 7 Bit 6 Reserved Table 27. Bit Descriptions for the BLMX Register Bit Name Bit No. Description N/A 7 Reserved. BL_MC [6:0] Backlight maximum current. The backlight maximum ...
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ADP8861 DAC Code Linear Law (mA) 0x44 16.063 0x45 16.299 0x46 16.535 0x47 16.772 0x48 17.008 0x49 17.244 0x4A 17.480 0x4B 17.717 0x4C 17.953 0x4D 18.189 0x4E 18.425 0x4F 18.661 0x50 18.898 0x51 19.134 0x52 19.370 0x53 19.606 0x54 19.842 ...
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Backlight Dim Current Register (BLDM)—Register 0x0A Table 29. BLDM Bit Map Bit 7 Bit 6 Reserved Table 30. Bit Descriptions for the BLDM Register Bit Name Bit No. Description N/A 7 Reserved. BL_DC [6:0] Backlight dim current. The backlight is ...
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ADP8861 Bit Name Bit No. SC4_EN 3 SC3_EN 2 SC2_EN 1 SC1_EN 0 Independent Sink Current Time (ISCT1)—Register 0x11 Table 35. ISCT1 Bit Map Bit 7 Bit 6 Bit 5 SCON Table 36. Bit Descriptions for the ISCT1 Register Bit ...
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Independent Sink Current Time (ISCT2)—Register 0x12 Table 37. ISCT2 Bit Map Bit 7 Bit 6 Bit 5 SC4_OFF Table 38. Bit Descriptions for the ISCT2 Register Bit Name Bit No. Description SC4_OFF [7:6] SC4 off time. When the SC off ...
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ADP8861 Independent Sink Current Fade (ISCF)—Register 0x13 Table 39. ISCF Bit Map Bit 7 Bit 6 Bit 5 SCFO Table 40. Bit Descriptions for the ISCF Register Bit Name Bit No. Description SCFO [7:4] Sink current fade out rate. The ...
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Sink Current Register LED7 (ISC7)—Register 0x14 Table 41. ISC7 Bit Map Bit 7 Bit 6 Bit 5 SCR Table 42. Bit Descriptions for the ISC7 Register Bit Name Bit No. Description SCR Sink Current ...
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ADP8861 DAC Code Linear Law (mA) 0x32 23.62 0x33 24.09 0x34 24.57 0x35 25.04 0x36 25.51 0x37 25.98 0x38 26.46 0x39 26.93 0x3A 27.40 0x3B 27.87 0x3C 28.35 0x3D 28.82 0x3E 29.29 0x3F 29.76 0x40 30.24 0x41 30.71 0x42 31.18 ...
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Sink Current Register LED6 (ISC6)—Register 0x15 Table 44. ISC6 Bit Map Bit 7 Bit 6 Reserved Table 45. Bit Descriptions for the ISC6 Register Bit Name Bit No. Description N/A 7 Reserved. SCD6 [6:0] Sink current. Use the following DAC ...
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ADP8861 Sink Current Register LED3 (ISC3)—Register 0x18 Table 50. ISC3 Bit Map Bit 7 Bit 6 Reserved Table 51. Bit Descriptions for the ISC3 Register Bit Name Bit No. Description N/A 7 Reserved. SCD3 [6:0] Sink current. Use the following ...
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OUTLINE DIMENSIONS PIN 1 INDICATOR 0.80 0.75 0.70 SEATING PLANE 4.10 0.30 4.00 SQ 0.25 3.90 0.20 16 0.50 15 BSC EXPOSED PAD 11 10 0.50 TOP VIEW BOTTOM VIEW 0.40 0.30 0.05 MAX 0.02 NOM COPLANARITY 0.08 0.20 REF ...
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... BALL A1 IDENTIFIER TOP VIEW (BALL SIDE DOWN) ORDERING GUIDE 1 Model Temperature Range ADP8861ACPZ-RL −40°C to +85°C ADP8861ACBZ-R7 −40°C to +85°C ADP8861DBCP-EVALZ ADP886XMB1-EVALZ RoHS Compliant Part refers to a communications protocol originally developed by Philips Semiconductors (now NXP Semiconductors). ...