TNY176PN Ver la hoja de datos (PDF) - Power Integrations, Inc
Número de pieza
componentes Descripción
Fabricante
TNY176PN
Power Integrations, Inc
TNY176PN Datasheet PDF : 22 Pages
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TNY174-180
BYPASS/
MULTI-FUNCTION
(BP/M)
115 μA
ENABLE
1.0 V + VT
ENABLE
(EN)
1.0 V
FAULT
PRESENT
AUTO-
RESTART
COUNTER
RESET
JITTER
CLOCK
DCMAX
OSCILLATOR
OVP
LATCH
REGULATOR
5.85 V
DRAIN
(D)
+
BYPASS
CAPACITOR
-
SELECT AND 5.85 V
CURRENT 4.9 V
LIMIT STATE
MACHINE
BYPASS PIN
UNDER-VOLTAGE
VILIMIT
CURRENT LIMIT
COMPARATOR
THERMAL
SHUTDOWN
S
Q
R
Q
LEADING
EDGE
BLANKING
Figure 2. Functional Block Diagram.
Pin Functional Description
DRAIN (D) Pin:
This pin is the power MOSFET drain connection. It provides
internal operating current for both startup and steady-state
operation.
BYPASS/MULTI-FUNCTION (BP/M) Pin:
This pin has multiple functions:
1. It is the connection point for an external bypass capacitor
for the internally generated 5.85 V supply.
2. It is a mode selector for the current limit value, depending
on the value of the capacitance added. Use of a 0.1 μF
capacitor 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 TNY175-180.
3. 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.
This can be used to provide an output overvoltage function
2A
08/07
SOURCE
(S)
PI-4771-073107
P Package (DIP-8C)
EN 1
BP/M 2
D4
8S
7S
6S
5S
Figure 3. Pin Conï¬guration.
PI-4772-07307
with a Zener connected from the BP/M pin to a bias winding
supply.
ENABLE (EN) Pin:
The switching of the power MOSFET is controlled by this pin.
MOSFET switching is terminated when a current greater than
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