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TNY285PG-TL Datasheet(PDF) 2 Page - Power Integrations, Inc.

Part # TNY285PG-TL
Description  Energy-Efficient, Off-Line Switcher With Line Compensated Overload Power
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Manufacturer  POWERINT [Power Integrations, Inc.]
Direct Link  http://www.powerint.com
Logo POWERINT - Power Integrations, Inc.

TNY285PG-TL Datasheet(HTML) 2 Page - Power Integrations, Inc.

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Rev. A 09/12
2
TNY284-290
www.powerint.com
Pin Functional Description
DRAIN (D) Pin:
This pin is the power MOSFET drain connection. It provides
internal operating current for both start-up and steady-state
operation.
BYPASS/MULTI-FUNCTION (BP/M) Pin:
This pin has multiple functions:
It is the connection point for an external bypass capacitor for
the internally generated 5.85 V supply.
It is a mode selector for the current limit value, depending on
the value of the capacitance added. Use of a 0.1
μF capaci-
tor results in the standard current limit value. Use of a 1
μF
capacitor results in the current limit being reduced to that of
the next smaller device size. Use of a 10
μF capacitor results
in the current limit being increased to that of the next larger
device size for TNY285-290.
It provides a shutdown function. When the current into the
bypass pin exceeds ISD, the device latches off until the BP/M
voltage drops below 4.9 V, during a power-down or, when the
UV function is employed with external resistors connected to
the BP/UV pin, by taking the UV/EN pin current below I
UV
minus the reset hysteresis (Typ. 18.75
μA). This can be used
Figure 3.
Functional Block Diagram.
PI-6639-113011
CLOCK
OSCILLATOR
5.85 V
4.9 V
SOURCE
(S)
S
R
Q
DCMAX
BYPASS/
MULTI-FUNCTION
(BP/M)
+
-
VI
LIMIT
FAULT
PRESENT
CURRENT LIMIT
COMPARATOR
ENABLE
LEADING
EDGE
BLANKING
THERMAL
SHUTDOWN
+
-
DRAIN
(D)
REGULATOR
5.85 V
BYPASS PIN
UNDER-VOLTAGE
1.0 V + VT
ENABLE/
UNDER-
VOLTAGE
(EN/UV)
Q
115 μA
25 μA
LINE UNDER-VOLTAGE
RESET
AUTO-
RESTART
COUNTER
JITTER
1.0 V
6.4 V
BYPASS
CAPACITOR
SELECT AND
CURRENT
LIMIT STATE
MACHINE
OVP
LATCH
LINE
COMPENSATION
Figure 4.
Pin Configuration.
PI-6577-053112
P Package (DIP-8C)
12 S
11 S
10 S
9 S
8 S
7 S
EN/UV 1
BP/M 2
N/C 3
N/C 4
D 6
K Package
(eSOP-12B)
Exposed Pad (On Bottom)
Internally Connected to
SOURCE Pin
D Package (SO-8C)
EN/UV 1
BP/M 2
D 4
8 S
7 S
6 S
5 S
5 S
7 S
8 S
D 4
BP/M 2
EN/UV 1
6 S


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