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SI6331DQ-T1 Datasheet
The Pulse-Width Modulator The function of the PWM circuit is to translate a feedback voltage into a periodical pulse of which the duty cycle depends on that feedback voltage. As can be seen in Figure 10, the PWM circuit in the NE5560 is a long-tailed pair in which the sawtooth on Pin 8 is compared with the LOWEST voltage on either Pin 4 (error amplifier) Pin 5, or Pin 6 (8MAX and slow-start). The transfer graph is given in Figure 11. The output of the PWM causes the resetting of the output bi-stable.
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WP WPEN Memory Array not Block Protected Memory Array Block Protected Block Protect Bits WPEN Bit Protection
LOW x Writes OK Writes Blocked Writes OK Writes OK Software
HIGH 0 Writes OK Writes Blocked Writes OK Writes OK Software
HIGH 1 Writes OK Writes Blocked Writes Blocked Writes Blocked Hardware


SI6331DQ-T1 on stock

PT6936 (33W2.5V)
Characteristic Symbol Conditions Min Typ Max Units


NOTES: 1. All VDD pins must be connected t0 2.5V power supply. 2. All VDDO pins must be connected to appropriate power supply: 3.3V if OPT pin for that port is set to VDD (2.5V), and 2.5V if OPT pin for that port is set to Vss (OV). 3. All Vss pins must be connected to ground supply. 4. A17x is a NC for IDT70T659. 5. Package body is approximately 17mm x 17mm x l.4mm, with l.Omm ball-pitch. 6. This package code is used to reference the package diagram.