SSL3401HN
Low voltage dimmable controller for LED lighting
Rev. 2 — 28 January 2014
Product data sheet
1. General description
The SSL3401HN is a Switched Mode Power Supply (SMPS) controller IC. It operates in
combination with a phase cut dimmer and a 12 V (AC or DC) low voltage electronic or
magnetic transformer. It is designed to drive LED devices and include a dimmer
conduction phase detector.
The chip includes a hysteretic controller for the power converter. It is most suitable for use
with a linear LED current source. Two embedded Proportional-Integral (PI) controllers and
a 0.052 % resolution PWM generator, adjusted by the dimmer conduction phase, ensure
excellent LED current stability for a dimming range from 100 % to less than 5 %. It also
minimizes the power loss across the LED current source.
Several protection mechanisms are available:
•
•
•
•
•
•
OverVoltage Protection (OVP)
Coil Current Limitation (CCL)
Short LED protection (SLED)
Open LED protection (OLED)
UnderVoltage LockOut (UVLO)
Advanced adaptive OverTemperature Protection (OTP)
2. Features and benefits
Easy migration to existing lighting control infrastructure
Support most available dimming and low-voltage transformation solutions
Excellent stability of LED current
Double PI controllers to enhance the line regulation of the LED current
Optimized dimming curve for low-voltage transformer compatibility
Automatic supply frequency detection for seamless operation with 50 Hz, 60 Hz or DC
sources
Dimmer conduction angle detection
Coil current limitation
Temperature roll-back protection
OverVoltage Protection
Power-On-Reset (POR)
Shorted LED protection
Open LED detection
NXP Semiconductors
SSL3401HN
Low voltage dimmable controller for LED lighting
3. Applications
General LED lighting with various power requirements
Dimmable 12 V MR16 and AR111 applications
4. Quick reference data
Table 1.
Symbol
V
DD(3V3)
I
DD
V
fbck(min)
Quick reference data
Parameter
supply voltage (3.3 V)
supply current
minimum feedback voltage
minimum voltage over 1
AC supply cycle in
steady state closed loop
configuration;
full output power
comparator;
positive hysteresis;
V
ACMPx
= 1.5 V
Pin HYSTSET set
HIGH or
not connected
Pin HYSTSET set
LOW
comparator;
negative hysteresis;
V
ACMPx
= 1.5 V
Pin HYSTSET set
HIGH or not connected
Pin HYSTSET set
LOW
I
O(sc)H
I
O(sc)L
V
th(scp)LED
V
th(ovp)
V
ovp(hys)
T
amb
T
th(otp)
HIGH-level short-circuit
output current
LOW-level short-circuit
output current
LED short-circuit protection
threshold voltage
overvoltage protection
threshold voltage
overvoltage protection
voltage hysteresis
ambient temperature
overtemperature protection
threshold temperature
pin BSTDRVx; V
OH
= 0 V
pin BSTDRVx;
V
OH
= 3.3 V
pin FB
pin OVP
pin OVP
operating
die junction temperature
-
-
-
-
-
-
-
0
-
20
10
-
-
2.4
1.90
0.55
-
125
-
-
45
50
3.9
-
-
105
-
mV
mV
mA
mA
V
V
V
C
C
-
20
-
mV
Conditions
Min
2.6
-
-
Typ
3.3
10
0.625
Max
3.6
-
-
Unit
V
mA
V
f
sw(PWM)
V
hys
PWM switching frequency
hysteresis voltage
-
12.5
-
kHz
-
10
-
mV
SSL3401HN
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2014. All rights reserved.
Product data sheet
Rev. 2 — 28 January 2014
2 of 29
NXP Semiconductors
SSL3401HN
Low voltage dimmable controller for LED lighting
5. Ordering information
Table 2.
Ordering information
Package
Name
SSL3401HN/1
HVQFN33
Description
plastic thermal enhanced very thin quad flat package; no leads;
32 terminals; body 5
5
0.85 mm
Version
HVQFN33
Type number
SSL3401HN
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2014. All rights reserved.
Product data sheet
Rev. 2 — 28 January 2014
3 of 29
NXP Semiconductors
SSL3401HN
Low voltage dimmable controller for LED lighting
7. Pinning information
7.1 Pinning
Fig 2.
Pin configuration
7.2 Pin description
Table 3.
Symbol
DNC
RESET
DNC
DNC
DNC
V
DD(IO)
DNC
DNC
HYSTSET
Pin description
Pin
1
2
3
4
5
6
7
8
9
Type
-
input
-
-
-
power
-
-
input
Reset
state
-
-
-
-
-
-
-
-
-
Description
do not connect
reset if LOW
do not connect
do not connect
do not connect
3.3 V I/O supply voltage
do not connect
do not connect
comparator hysteresis level setting (high
hysteresis level if pin is left open or set HIGH,
low hysteresis level if pin is set LOW)
do not connect
do not connect
output load control (input pin at reset)
input latching current setting control
overtemperature setting control
© NXP B.V. 2014. All rights reserved.
DNC
DNC
LOADPWM
ILATCHSETACT
OTPSETACT
SSL3401HN
10
11
12
13
14
-
-
output
input
input
-
-
H
-
-
All information provided in this document is subject to legal disclaimers.
Product data sheet
Rev. 2 — 28 January 2014
5 of 29
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