LYT1402-1604
ꢏꢃꢉꢌꢈ
ꢆꢏꢇ
ꢐYꢍꢉꢀꢀ
ꢆꢐꢍꢇ
ꢁꢑꢅꢀ
ꢌLꢌꢊꢌT
ꢀꢁꢉ
ꢃꢅꢓꢂLꢉTꢁꢃ
ꢔꢕ2ꢔ ꢖ
ꢌꢈꢍꢂT
Lꢌꢈꢅ
ꢇꢒꢓeꢔꢕꢖꢗꢘ
ꢀꢅꢈꢀꢅ
ꢑꢙꢀ
TꢋꢅꢃꢊꢉL
ꢀꢋꢂTꢏꢁꢘꢈ
ꢊꢂLTꢌ-
ꢑꢂꢈꢄTꢌꢁꢈ
ꢆꢊꢇ
ꢗꢅꢃꢁ
ꢄꢂꢃꢃꢅꢈT
ꢏꢅTꢅꢄTꢌꢁꢈ
ꢀꢁꢂꢃꢄꢅ
ꢆꢀꢇ
ꢑꢑꢅꢀ
ꢖꢁꢂT
ꢀꢅꢈꢀꢅ
ꢅꢑꢚꢙꢔꢛꢛ
ꢋꢆꢚꢇꢙ
ꢑꢉꢂLT
ꢋꢉꢈꢏLꢌꢈꢓ
ꢚꢅ
ꢄ.ꢎ ꢅ
ꢀYꢀTꢅꢊ
ꢄLꢁꢄꢒ
ꢁꢅꢆꢇꢇꢈꢉ
ꢆꢕꢔꢟꢒꢠꢡ
0.7 ꢊ ꢅꢋBꢌRꢈꢋꢍ
Tꢁꢈ
ꢀTꢉTꢅ
ꢊꢉꢄꢋꢌꢈꢅ
ꢂꢍꢎꢏꢈ
ꢄꢁꢂꢈTꢅꢃ
ꢄꢁꢈTꢃꢁL
Lꢁꢓꢌꢄ
ꢀ
ꢙ
R1
0 ꢅ
ꢁꢀꢏ
ꢆꢕꢔꢅꢜꢝꢝeꢞ
ꢃ
ꢙ
Rꢐ
ꢑꢅꢅꢏꢐꢉꢄꢒ
ꢆꢑꢐꢇ
ꢀꢁꢂ7ꢃ07ꢂ0ꢄ0ꢄ16
Figure 3. Block Diagram.
Pin Functional Description
BYPASS (BP) Pin:
5.25 V supply rail.
ꢀ ꢁꢂꢃꢄꢂꢅꢆ ꢇꢈꢉ-ꢊꢋ
MULTIFUNCTION (M) Pin:
Mode 1: FET OFF
• Detection of inductor de-magnetization (ZCD) to ensure CrM.
• Output OVP Sensing (120 % of VOUT nominal).
• Steady-state operation voltage range is [1 V – 2.4 V].
Mode 2: FET ON
1
2
ꢏ
4
ꢊ
ꢌꢁ
ꢍ
ꢈ
ꢈ
ꢐ
6
ꢑ
ꢈ
ꢈ
ꢎꢌ
ꢀ
• Line OVP.
FEEDBACK (FB) Pin:
• FET current sensing using external current sense resistor.
• Normal operation voltage range is [VFB(REF) – 0 V].
ꢀꢁꢂ7ꢃ0ꢄꢂ0ꢅꢆꢆ16
DRAIN (D) Pin:
High-voltage internal MOSFET.
Figure 4. Pin Configuration.
SOURCE (S) Pin:
Power and signal ground.
2
Rev. B 07/16
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POWERINT [ Power Integrations ]
