Dedicated Reset Function ICs
LA5623M
■ Applications
unit: mm
LED Driver ICs
LV5215LF
■Applications
unit: mm
Combination system reset IC
■Functions/Features
●Reset circuit (output 1) that detects the input voltage and provides a delay time of 200μs
●System reset circuit with switchable delay time of 25ms, 50ms, 100ms, and 200ms (output 2)
●Low minimum operating voltage
●Both reset 1 and reset 2 have hysteresis characteristics
| 5.0 |
8 | 5 |
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| 4.4 | 6.4 |
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| 0.63 |
| 1 | 4 |
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(0.65) | 1.27 | 0.35 | 0.15 |
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| (1.5) | 1.7max |
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| 0.1 |
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SANYO: MFP8(225mil)
LED driver for use in cell phones
■Functions/Features
●Four main LED driver circuits
●Supports two LED current modes
●Compact package
●Thermal shutdown function
TOP VIEW |
| SIDE VIEW | |
2.0 |
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| 2.0 |
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| 0.25 |
1 | 2 |
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SIDE VIEW | 0.85MAX | |
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| (0.8) |
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| 0.0NOM |
BOTTOM VIEW
Exposed
Do Not Connect
(1.0)
(1.0)
12
21
0.5(0.5)
0.25
SANYO: VQFN12(2.0X2.0)
Absolute maximum | Total power | Package | Functions/Features | |
ratings Input voltage | dissipation | |||
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0.3W | MFP8(225mil) | |||
time 25ms, 50ms, 100ms, or 200ms switchable | ||||
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Input voltage | Channels | Package | Circuit Functions and Applications |
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3.0V to 4.5V | 4ch | VQFN12(2.0×2.0) | LED driver for use in cell phones |
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Block Diagram |
VCC |
7 |
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| 10kΩ |
| VREF |
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| 1.25V | 6 OUT1 |
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| + |
INPUT 2 |
| - |
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| 10kΩ |
| + |
| 5 OUT2 |
VREF | OSC | Divider circuit | Drive block |
- |
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4.2V |
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Reset circuit
Multiplexer
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| 8 |
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| 4 |
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| 1 |
| 3 |
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MANUAL | GND | Ct0 | Ct1 | ||||||||||
RESET |
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VCC1
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| ILED |
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MLED1 | MLED2 | MLED3 | MLED4 | VCC |
LED DRIVER
IREF IF
SWI | SWO | RT | CTL | GND |
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| IRT |
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| R2 |
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| 11kΩ |
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| R1 |
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| 110kΩ |
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Block Diagram
VBAT
23 | 24 |