Ordering number : ENA1980
Bi-CMOS IC
Low power consumption and high efficiency
LV5980MX
Step-down Switching Regulator
Overview
LV5980MX is 1ch DC-DC converter with built-in power Pch MOSFET. The recommended operating range is 4.5V to
23V. The maximum current is 3A. The operating current is about 60μA, and low power consumption is achieved.
Features and Functions
• 1ch SBD rectification DC-DC converter IC with built-in power Pch MOSFET
• Typical value of light load mode current is 60μA
• 4.5V to 23V Operating input voltage range
• 100mΩ High-side switch
• Output voltage adjustable to 1.235V
• The oscillatory frequency is 370kHz
• built-in OCP circuit with P-by-P method
• When P-by-P is generated continuously, it shifts to the HICCUP operation
• If connect C-HICCUP to GND pin, then latch-off when over current • External capacitor Soft-start
• Under voltage lock-out, thermal shutdown and power good indication
Applications
• DVD/Blu-ray™ drivers and HDD
• Point of load DC/DC converters
• LCD monitors and TVs
• Office supplies
Application Circuit Example
100
IN
C3
10μF
×2
L1 10μH
VIN
OUT
90
SW
D1
1μF
POR
EN
PG
REF
LV5980MX
R3
C2
5V
10μF
×3
FB
R2
COMP
R1
80
Efficiency -- %
15V C1
Efficiency
VIN = 15V,
VOUT = 5V
70
60
50
SS
47kΩ
C-HICCUP
C7
C6
C5
C4
1μF 4.7nF 2.2nF 22nF
GND
C1: GRM31CB31E106K [murata]
C3: C2102JB0J106M [TDK]
L1: C6-K5LGA [mitsumi]
D1: SBM30-03 [SANYO]
40
30
0.1 2 3 5 7 1
2 3 5 7 10
2 3 5 7100 2 3 5 71000 2 3 5 710000
Load current -- mA
Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to
"standard application", intended for the use as general electronics equipment. The products mentioned herein
shall not be intended for use for any "special application" (medical equipment whose purpose is to sustain life,
aerospace instrument, nuclear control device, burning appliances, transportation machine, traffic signal system,
safety equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives
in case of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any
guarantee thereof. If you should intend to use our products for new introduction or other application different
from current conditions on the usage of automotive device, communication device, office equipment, industrial
equipment etc. , please consult with us about usage condition (temperature, operation time etc.) prior to the
intended use. If there is no consultation or inquiry before the intended use, our customer shall be solely
responsible for the use.
Specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein stipulate
the performance, characteristics, and functions of the described products in the independent state, and are not
guarantees of the performance, characteristics, and functions of the described products as mounted in the
customer's products or equipment. To verify symptoms and states that cannot be evaluated in an independent
device, the customer should always evaluate and test devices mounted in the customer ' s products or
equipment.
O1211 SY PC 20110912-S00011 No.A1980-1/16
LV5980MX
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Symbol
Input voltage
VIN max
Allowable pin voltage
VIN-SW
Conditions
Ratings
Unit
25
V
30
V
EN
VIN
V
PG
VIN
V
6
V
VIN-PDR
REF
6
V
SS
REF
V
FB
REF
V
COMP
REF
V
C-HICCUP
REF
V
1.05
W
Allowable power dissipation
Pd max
Specified substrate *1
Operating temperature
Topr
-40 to +85
°C
Storage temperature
Tstg
-55 to +150
°C
*1 Specified substrate : 40.0mm × 30.0mm × 1.6mm, fiberglass epoxy printed circuit board, 2 layers
Note 1 : Absolute maximum ratings represent the values which cannot be exceeded for any length of time.
Note 2 : Even when the device is used within the range of absolute maximum ratings, as a result of continuous usage under high temperature, high current,
high voltage, or drastic temperature change, the reliability of the IC may be degraded. Please contact us for the further details.
Recommended Operating Conditions at Ta = 25°C
Parameter
Input Voltage Range
Symbol
Conditions
Ratings
VIN
Unit
4.5 to 23
V
Electrical Characteristics at Ta = 25°C, VIN = 15V, unless otherwise specified.
Ratings
Parameter
Symbol
Conditions
Unit
min
typ
max
Reference voltage
Internal reference voltage
VREF
Pch drive voltage
VPDR
1.210
1.235
1.260
V
VIN-5.5
VIN-5.0
VIN-4.5
V
FOSC
310
370
430
IC startup voltage (EN PIN)
VCNT_ON
2.0
Disable voltage (EN PIN)
VCNT_OFF
IOUT = 0 to -5mA
Saw wave oscillator
Oscillatory frequency
kHz
ON/OFF circuit
VIN
V
0.3
V
2.4
μA
Soft start circuit
Soft start • source current
ISS_SC
EN > 2V
Soft start • sink current
ISS_SK
EN < 0.3V, SS = 0.4V
UVLO release voltage
VUVLON
FB = COMP
3.3
3.7
4.1
V
UVLO lock voltage
VUVLOF
FB = COMP
3.02
3.42
3.82
V
380
μA/V
1.2
1.8
μA
220
UVLO circuit
Error amplifier
Input bias current
IEA_IN
Error amplifier gain
GEA
-100
-10
100
220
nA
Output sink current
IEA_OSK
FB = 1.75V
-30
-17
-8
μA
Output source current
IEA_OSC
FB = 0.75V
8
17
30
μA
3.5
4.7
6.2
Over current limit circuit
Current limit peak
ICL
HICCUP timer start-up cycle
NCYC
HICCUP comparator threshold voltage
VtHIC
HICCUP timer charge current
IHIC
15
1.19
1.25
1.8
A
cycle
1.31
V
μA
PWM comparator
Maximum on-duty
DMAX
94
%
Continued on next page.
No.A1980-2/16
LV5980MX
Continued from preceding page.
Ratings
Parameter
Symbol
Conditions
Unit
min
typ
max
Logic output
Power good “L” sink current
IPWRGD_L
PG = 0.5V
Power good “H” leakage current
IPWRGD_H
PG = 5V
Power good threshold FB voltage
VtPG
Power good hysteresis
VPG_H
0.47
mA
1
0.97
1.07
1.17
40
50
60
μA
V
mV
Output
Output on resistance
RON
IO = 0.5A
100
mΩ
The entire device
Standby current
ICCS
EN < 0.3V
Light load mode consumption current
ISLEEP
EN > 2V, No oscillatory
Thermal shutdown
TSD
Design guarantee *2
60
170
1
μA
80
μA
°C
*2 : Design guarantee: Signifies target value in design. These parameters are not tested in an independent IC.
No.A1980-3/16
LV5980MX
Package Dimensions
unit : mm (typ)
3414
Pd max – Ta
Allowable power dissipation, Pd max -- W
1.5
5.0
0.43
6.0
4.4
12
1
2
0.3
0.15
0.8
1.7 MAX
(0.5)
1.05
1.0
0.55
0.5
0
--40
--20
0
20
40
80
60
100
0.05
(1.5)
Ambient temperature, Ta -- °C
SANYO : MFP12SJ(200mil)
Specified substrate
Top
Bottom
Pin Assignment
Top view
SW
1
12
VIN
PDR
2
11
EN
GND
3
10
PG
9
REF
LV5980MX
NC
4
C-HICCUP
5
8
FB
SS
6
7
COMP
MFP12SJ
No.A1980-4/16
LV5980MX
Block Diagram
VIN
EN
Wake-up
REF
Band-gap
TSD
REF
uvlo.comp
Bias
1.235V
Pch Drive
enable
PDR
C-HICCUP
pwm comp
hiccup.comp
COMP
15pluse
counter
PbyP.comp
SS
error.amp
enable
FB
slope
OSC
PG
Q
S
CK RQ
clk
Level-shift
SW
lnit.comp
PDR
1.07V
pg.comp
gnd
GND
No.A1980-5/16
LV5980MX
Pin Function
Pin No.
1
Pin name
SW
Function
Equivalent circuit
High-side Pch MOSFET drain Pin.
VIN
22mΩ
SW
2
PDR
Pch MOSFET gate drive voltage.
VIN
The bypass capacitor is necessarily connected between this
1.3MΩ
pin and VIN.
1.5MΩ
10kΩ
PDR
10kΩ
10Ω
GND
3
GND
Ground Pin. Ground pin voltage is reference voltage
VIN
GND
4
NC
NC Pin.
The NC Pin becomes open in an IC.
Therefore the NC Pin has any problem by neither the grand
short nor the open.
5
C-HICCUP
It is capacitor connection pin for setting re-startup cycle in
VIN
HICCUP mode.
If connect it to GND pin, then latch-off when over current.
1kΩ
C-HICCUP
GND
6
SS
Capacitor connection pin for soft start.
VIN
About 1.8μA current charges the soft start capacitor.
1kΩ
SS
10kΩ
1kΩ
GND
Continued on next page.
No.A1980-6/16
LV5980MX
Continued from preceding page.
Pin No.
7
Pin name
COMP
Function
Error amplifier output pin.
Equivalent circuit
VIN
The phase compensation network is connected between GND
pin and COMP pin.
Thanks to current-mode control, comp pin voltage would tell
you the output current amplitude. Comp pin is connected
70kΩ
internally to an Init.comparator which comparates with 0.9V
reference. If comp pin voltage is larger than 0.9V, IC operates
1kΩ
in “continuous mode”. If comp pin voltage is smaller than 0.9V,
IC operates in “discontinuous mode (low consumption mode)”.
COMP
1kΩ
GND
8
FB
Error amplifier reverse input pin.
VIN
ICs make its voltage keep 1.235V.
10kΩ
Output voltage is divided by external resistances and it across
FB.
1kΩ
FB
1kΩ
GND
9
REF
Reference voltage.
VIN
10Ω
10Ω
REF
51kΩ
1MΩ
450kΩ
GND
10
PG
Power good pin.
PG
Connect to open drain of MOS-FET in ICs inside.
Setting output voltage to "L", when FB voltage is 1.02V or less.
1kΩ
GND
11
EN
ON/OFF Pin.
VIN
4.8MΩ
EN
GND
12
VIN
Supply voltage pin.
VIN
It is observed by the UVLO function.
When its voltage becomes 3.7V or more, ICs startup in soft
start.
GND
No.A1980-7/16
LV5980MX
Detailed Description
Power-save Feature
The LV5980MX has Power-saving feature to enhance efficiency when the load is light.
By shutting down unnecessary circuits, operating current of the IC is minimized and high efficiency is realized.
Output Voltage Setting
Output voltage (VOUT) is configurable by the resistance R3 between VOUT and FB and the R2 between FB and GND.
VOUT is given by the following equation (1).
R3
R3
VOUT = (1 + R2 ) × VREF = (1 + R2 ) × 1.235 [V]
(1)
Soft Start
Soft start time (TSS) is configurable by the capacitor (C5) between SS and GND. The setting value of TSS is given by the
equation (2).
VREF
1.235
TSS = C5 × I
= C5 ×
[ms]
1.8
× 10-6
SS
(2)
Power Good
FB constantly monitors VOUT. When FB voltage is lower than 1.02V, PG is pulled down to Low. PG comparator has
hysteresis of 50mV. Because PG is open-drain output, you can connect other ICs with PG to realize wired-or with other
ICs.
Hiccup Over Current Protection
Over current limit (ICL) is set to 4.7A in the IC. When the peak value of inductor current is higher than 4.7A for 15
consecutive times, the protection deems it as over current and stops the IC. Stop period (THIC) is defined by the external
capacitor of the C-HICCUP. When C-HICCUP is about 1.25V, the IC starts up. Regardless of a status; whether it starts up
or SS charge, once over current is detected, the IC stops again and when the protection does not detect over current status,
the IC starts up again. The setting value of THIC is given by the equation (3).
C4 × VtHIC C4 × 1.25
THIC =
=
[s]
(3)
IHIC
1.8 × 10-6
The IC stops when the peak value of inductor current is higher
than overcurrent limit for 15 consecutive times.
ICL
IL
1.25V
* The stop time defined by
external capacitor of C-HICCUP
C-HICCUP
THIC
The IC starts up when C-HICCUP is 1.25V
SS
•The IC stops when overcurrent is detected.
•The IC starts up again if no overcurrent is detected.
FB
FB=1.02V
PG
* FB ≥ 1.07V ⇒ High
No.A1980-8/16
LV5980MX
Design Procedure
Inductor Selection
When conditions for input voltage, output voltage and ripple current are defined, the following equations (4) give
inductance value.
L=
VIN - VOUT
× TON
ΔIR
TON =
{((V
FOSC
VF
VIN
VOUT
(4)
1
IN - VOUT) ÷ (VOUT + VF)) + 1} × FOSC
: Oscillatory Frequency
: Forward voltage of Schottky Barrier diode
: Input voltage
: Output voltage
• Inductor current: Peak value (IRP)
Current peak value (IRP) of the inductor is given by the equation (5).
VIN - VOUT
IRP = IOUT +
× TON
2L
(5)
Make sure that rating current value of the inductor is higher than a peak value of ripple current.
• Inductor current: ripple current (∆IR)
Ripple current (∆IR) is given by the equation (6).
ΔIR =
VIN - VOUT
× TON
L
(6)
When load current (IOUT) is less than 1/2 of the ripple current, inductor current flows discontinuously.
Output Capacitor Selection
Make sure to use a capacitor with low impedance for switching power supply because of large ripple current flows
through output capacitor.
This IC is a switching regulator which adopts current mode control method. Therefore, you can use capacitor such as
ceramic capacitor and OS capacitor in which equivalent series resistance (ESR) is exceedingly small.
Effective value is given by the equation (7) because the ripple current (AC) that flows through output capacitor is saw
tooth wave.
IC_OUT =
VOUT × (VIN - VOUT)
1
×
[Arms]
L × FOSC × VIN
2√3
(7)
Input Capacitor Selection
Ripple current flows through input capacitor which is higher than that of the output capacitors.
Therefore, caution is also required for allowable ripple current value.
The effective value of the ripple current flows through input capacitor is given by the equation (8).
IC_IN = √D (1 - D) × IOUT [Arms]
(8)
TON VOUT
D= T = V
IN
In (8), D signifies the ratio between ON/OFF period. When the value is 0.5, the ripple current is at a maximum. Make sure
that the input capacitor does not exceed the allowable ripple current value given by (8). With (8), if VIN=15V, VOUT=5V,
IOUT=1.0A and FOSC=370 kHz, then IC_IN value is about 0.471Arms.
In the board wiring from input capacitor, VIN to GND, make sure that wiring is wide enough to keep impedance low
because of the current fluctuation. Make sure to connect input capacitor near output capacitor to lower voltage bound due
to regeneration current.When change of load current is excessive (IOUT: high ⇒ low), the power of output electric
capacitor is regenerated to input capacitor. If input capacitor is small, input voltage increases. Therefore, you need to
implement a large input capacitor. Regeneration power changes according to the change of output voltage, inductance of
a coil and load current.
No.A1980-9/16
LV5980MX
Selection of external phase compensation component
This IC adopts current mode control which allows use of ceramic capacitor with low ESR and solid polymer capacitor
such as OS capacitor for output capacitor with simple phase compensation. Therefore, you can design long-life and high
quality step-down power supply circuit easily.
Frequency Characteristics
The frequency characteristic of this IC is constituted with the following transfer functions.
(1) Output resistance breeder
: HR
(2) Voltage gain of error amplifier
: GVEA
Current gain
: GMEA
(3) Impedance of phase compensation external element
: ZC
(4) Current sense loop gain
: GCS
(5) Output smoothing impedance
: ZO
VIN
1/GCS
OSC
FB
Current
sence loop
GVER
GMER
D
CLK
Q
C
R
SW
VOUT
COMP
VREF
R2
CC
ZC
RC
HR
R1
CO
RL
ZO
Closed loop gain is obtained with the following formula (9).
G = HR • GMER • ZC • GCS • ZO
VREF
RL
1
=V
• GMER • RC + SC • GCS • 1 + SC • R
OUT
O
L
C
(9)
Frequency characteristics of the closed loop gain is given by pole fp1 consists of output capacitor CO and output load
resistance RL, zero point fz consists of external capacitor CC of the phase compensation and resistance RC, and pole fp2
consists of output impedance ZER of error amplifier and external capacitor of phase compensation CC as shown in
formula (9). fp1, fz, fp2 are obtained with the following equations (10) to (12).
fp1 =
fz =
1
2π • CO • RL
1
2π • CC • RC
fp2 =
1
2π • ZER • CC
(10)
(11)
(12)
No.A1980-10/16
LV5980MX
Calculation of external phase compensation constant
Generally, to stabilize switching regulator, the frequency where closed loop gain is 1 (zero-cross frequency fZC) should
be 1/10 of the switching frequency (or 1/5). Since the switching frequency of this IC is 370kHz, the zero-cross frequency
should be 37kHz. Based on the above condition, we obtain the following formula (13).
RL
VREF
1
VOUT • GMER • RC + SCC • GCS • 1 + SCO • RL = 1
(13)
As for zero-cross frequency, since the impedance element of phase compensation is RC >>1/SCC, the following equation
(14) is obtained.
RL
VREF
•
G
•
R
•
G
•
=1
MER
C
CS
VOUT
1 + 2π • fZC • CO • RL
(14)
Phase compensation external resistance can be obtained with the following formula (15), the variation of the formula (14).
Since 2π • fZC • CO • RL >> 1 in the equation (15), we know that the external resistance is independent of load resistance.
VOUT
1 + 2π • fZC • CO • RL
1
1
RC = V
•
•
•
RL
REF GMER GCS
(15)
When output is 5V and load resistance is 5Ω (1A load), the resistances of phase compensation are as follows.
GCS = 2.7A/V, GMER = 220μA/V, fZC = 37kHz
5
1
1 1 + 2 × 3.14 × (37 × 103) × (30 × 10-6) × 5
RC = 1.235 ×
= 48.898…× 103
-6 ×
5
2.7 ×
220 × 10
= 48.90 [kΩ]
If frequency of zero point fz and pole fp1 are in the same position, they cancel out each other. Therefore, only the pole
frequency remains for frequency characteristics of the closed loop gain.
In other words, gain decreases at -20dB/dec and phase only rotates by 90º and this allows characteristics where oscillation
never occurs.
fp1 = fz
1
1
•
2π • CO • RL 2π • CO • RC
CC =
RL • CO 5 × (30 × 10-6)
-9
RC • 48.9 × 103 = 3.067…× 10
= 3.07 [nF]
The above shows external compensation constant obtained through ideal equations. In reality, we need to define phase
constant through testing to verify constant IC operation at all temperature range, load range and input voltage range. In the
evaluation board for delivery, phase compensation constants are defined based on the above constants. The zero-cross
frequency required in the actual system board, in other word, transient response is adjusted by external compensation
resistance. Also, if the influence of noise is significant, use of external phase compensation capacitor with higher value is
recommended.
No.A1980-11/16
LV5980MX
Caution in pattern design
Pattern design of the board affects the characteristics of DC-DC converter. This IC switches high current at a high speed.
Therefore, if inductance element in a pattern wiring is high, it could be the cause of noise. Make sure that the pattern of the
main circuit is wide and short.
Red
: High Side MOSFET ON
Orange : High Side MOSFET OFF
(3)
(5)
(2)
(1)
(4)
(6)
(7)
(1) Pattern design of the input capacitor
Connect a capacitor near the IC for noise reduction between VIN and the GND. The change of current is at the largest
in the pattern between an input capacitor and VIN as well as between GND and an input capacitor among all the main
circuits. Hence make sure that the pattern is as fat and short as possible.
(2) Pattern design of an inductor and the output capacitor
High electric current flows into the choke coil and the output capacitor. Therefore this pattern should also be as fat and
short as possible.
(3) Pattern design with current channel into consideration
Make sure that when High side MOSFET is ON (red arrow) and OFF (orange arrow), the two current channels runs
through the same channel and an area is minimized.
(4) Pattern design of the capacitor between VIN-PDR
Make sure that the pattern of the capacitor between VIN and PDR is as short as possible.
(5) Pattern design of the snubber circuit
Locate a snubber circuit in parallel with the Schottky barrier diode.
(6) Pattern design of the small signal GND
The GND of the small signal should be separated from the power GND.
(7) Pattern design of the FB-OUT line
Wire the line shown in red between FB and OUT to the output capacitor as near as
possible.
OUT
FB
Fig: FB-OUT Line
No.A1980-12/16
LV5980MX
Typical Performance Characteristics
Application Curves at Ta = 25°C
100
Efficiency
100
VOUT = 1.235V
90
90
Efficiency -- %
70
60
50
40
50
40
20
20
10
0.1 2 3 5 7 1
2 3 5 7100 2 3 5 71000 2 3 5 710000
Load current -- mA
Efficiency
VOUT = 3.3V
90
100
VIN=5V
12V
15V
80
70
Efficiency -- %
Efficiency -- %
60
30
2 3 5 7 10
60
50
40
VOUT = 5V
15V
70
60
50
40
20
Load current -- mA
Efficiency
VIN=12V
20
2 3 5 7100 2 3 5 71000 2 3 5 710000
2 3 5 7100 2 3 5 71000 2 3 5 710000
Load current -- mA
80
30
2 3 5 7 10
2 3 5 7 10
90
30
10
0.1 2 3 5 7 1
12V
15V
70
30
10
0.1 2 3 5 7 1
VIN=5V
80
Efficiency -- %
V IN=5V
12V
15V
80
100
Efficiency
VOUT = 1.8V
10
0.1 2 3 5 7 1
2 3 5 7 10
2 3 5 7100 2 3 5 71000 2 3 5 710000
Load current -- mA
Wake up sequence (Circuit from Typical Application, Ta = 25°C, VIN = 15V, VOUT = 5V)
IOUT = 10mA Operate
waveform
IOUT = 10mA
VSW
5V/DIV
VOUT
20mV/DIV
IL
0.5A/DIV
IL
0.5A/DIV
5μs/DIV
Output waveform
5μs/DIV
No.A1980-13/16
LV5980MX
IOUT = 200mA
IOUT = 200mA
Operate waveform
VSW
5V/DIV
VOUT
20mV/DIV
IL
0.5A/DIV
IL
0.5A/DIV
2μs/DIV
IOUT = 2A
Output waveform
2μs/DIV
IOUT = 2A
Operate waveform
VSW
5V/DIV
VOUT
20mV/DIV
IL
0.5A/DIV
IL
0.5A/DIV
2μs/DIV
Output waveform
2μs/DIV
IOUT = 0.5 ⇔ 2.5A,
Slew Rate = 20μA Load
IOUT = 2A
transient response
Soft start & Shutdown
VEN
2V/DIV
VOUT
0.2V/DIV
VSS
5V/DIV
VOUT
5V/DIV
IOUT
2A/DIV
VPG
10V/DIV
500μs/DIV
OUT - GND short
2ms/DIV
HICCUP Operating waveform
VOUT
5V/DIV
VSS
5V/DIV
VHICCUP
1V/DIV
IOUT
5A/DIV
10ms/DIV
No.A1980-14/16
LV5980MX
Characterization Curves at Ta = 25°C, VIN = 15V
No load supply current
90
Internal reference voltage
1.26
Internal reference voltage -- V
80
Input current -- μA
70
60
50
40
30
20
1.25
1.24
1.23
1.22
10
0
--50
--25
0
25
50
75
100
125
1.21
--50
150
--25
0
Temperature -- °C
Output on resistance
140
4.9
120
4.8
100
80
60
40
20
0
--50
50
75
100
125
150
100
125
150
125
150
Current limit peak
5
Current limit peak -- A
Output on resistance -- mΩ
160
25
Temperature -- °C
4.7
4.6
4.5
4.4
4.3
--25
0
25
50
75
100
125
4.2
--50
150
--25
0
Temperature -- °C
Oscillatory frequency
400
25
50
75
Temperature -- °C
UVLO hysteresis voltage
0.32
UVLO hysteresis voltage -- V
Oscillatory frequency -- kHz
390
380
370
360
350
340
330
320
0.3
0.28
0.26
0.24
310
300
--50
--25
0
25
50
75
100
125
0.22
--50
150
--25
0
Temperature -- °C
Soft start source current
2
HICCUP timer charge current -- μA
Soft start source current -- μA
2
1.9
1.8
1.7
1.6
1.5
--50
--25
0
25
50
75
Temperature -- °C
25
50
75
100
Temperature -- °C
100
125
150
HICCUP timer charge current
1.9
1.8
1.7
1.6
1.5
--50
--25
0
25
50
75
100
125
150
Temperature -- °C
No.A1980-15/16
LV5980MX
EN current
5
1.8
EN voltage -- V
EN current -- μA
4
3
2
1
1.6
1.4
1.2
1
0
--50
--25
0
25
50
75
100
125
150
Temperature -- °C
0.8
--50
--25
0
25
50
75
100
125
150
Temperature -- °C
Power good threshold FB voltage
1.1
Power good threshold voltage -- V
IC startup EN voltage
2
1.09
1.08
1.07
1.06
1.05
1.04
1.03
--50
--25
0
25
50
75
100
125
150
Temperature -- °C
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PS No.A1980-16/16