tea1738t NXP Semiconductors, tea1738t Datasheet - Page 8

• Manufacturer Part Number: tea1738t
• Description: Tea1738t; Tea1738lt Greenchip Smps Control Ic
• Manufacturer: NXP Semiconductors

NXP Semiconductors
TEA1738T_TEA1738LT
Product data sheet
7.10 Current mode control (ISENSE pin)
In the TEA1738T when the V
TEA1738LT is latched in an off state when the V
Current mode control is used for its good line regulation.
The primary current is sensed by the ISENSE pin across external resistor R9
(see
is proportional to the CTRL pin voltage (see
Fig 5.
Fig 6.
Figure
Overpower delay: latched (TEA1738LT)
Overpower delay (TEA1738T)
V
V
3) and compared with an internal control voltage. The internal control voltage
OPTIMER
OPTIMER
V
V
ISENSE
ISENSE
All information provided in this document is subject to legal disclaimers.
V
V
I
I
O
O
O
O
Rev. 2 — 14 January 2011
high load
high load
prot(OPTIMER)
normal
normal
load
load
TEA1738T; TEA1738LT
voltage is reached the device is restarted. The
Figure
prot(OPTIMER)
high load
high load
7).
GreenChip SMPS control IC
voltage is reached.
protection
protection
400 mV
V
400 mV
V
014aaa930
014aaa968
prot(OPTIMER)
prot(OPTIMER)
© NXP B.V. 2011. All rights reserved.
8 of 21