Datasheet
ADN8831 Data Sheet
Rev. A | Page 4 of 20
SPECIFICATIONS
ELECTRICAL CHARACTERISTICS
V
DD
= 3.0 V to 5.0 V, T
A
= 25°C, unless otherwise noted.
Table 1.
Parameter
1
Symbol Test Conditions/Comments Min Typ Max Unit
PWM OUTPUT DRIVER
Output Transition Time t
R
, t
F
C
L
= 3300 pF 20 ns
Nonoverlapping Clock Delay 40 80 ns
Output Resistance R
O (SNG ATE, SPGATE )
I
L
= 10 mA, V
DD
= 3.0 V 6 Ω
Output Voltage Swing
2
SFB V
LIM
= VREF 0 V
DD
V
LINEAR OUTPUT AMPLIFIER
Output Resistance R
O, LNGATE
I
OUT
= 2 mA, V
DD
= 3.0 V 200 Ω
R
O, LPGATE
I
OUT
= 2 mA, V
DD
= 3.0 V 100 Ω
Output Voltage Swing
2
LFB 0 V
DD
V
POWER SUPPLY
Power Supply Voltage V
DD
3.0 5.5 V
Supply Current I
SY
PWM not switching 8 12 mA
−40°C ≤ T
A
≤ +85°C 15 mA
Shutdown Current I
SD
SYNCI/
SD
= 0 V 8 µA
Soft Start Charging Current I
SS
V
SS
= 0 V 8 µA
Undervoltage Lockout
3
UVLO Low to high threshold 2.2 2.6 V
Standby Current I
SB
SYNCI/
SD
= V
DD
, SS/
SB
= 0 V 2 mA
Standby Threshold V
SB
SYNCI/
SD
= V
DD
150 200 mV
ERROR/COMPENSATION AMPLIFIERS
Input Offset Voltage V
OS1
V
CM1
= 1.5 V, V
IN1P
− V
IN1M
10 100 μV
V
OS2
V
CM2
= 1.5 V, V
IN2P
− V
IN2M
10 100 μV
Input Voltage Range V
CM1
, V
CM2
0 V
DD
V
Common-Mode Rejection Ratio
CMRR
1
, CMRR
2
V
CM1
, V
CM2
= 0.2 V to V
DD
− 0.2 V
120
dB
Output Voltage High V
OH1
, V
OH2
V
DD
− 0.03 V
Output Voltage Low V
OL1
, V
OL2
25 mV
Power Supply Rejection Ratio PSRR
1
, PSRR
2
3.0 V ≤ V
DD
≤ 5.0 V 110 dB
Output Current I
OUT1
, I
OUT2
Sourcing and sinking 5 mA
Gain Bandwidth Product GBW
1
, GBW
2
V
OUT
= 0.5 V to (V
DD
− 1 V) 2 MHz
OSCILLATOR
Sync Range f
CLK
SYNCI/
SD
connected to external
clock
300 1000 kHz
Oscillator Frequency f
CLK
COMPOSC = V
DD
, R
FREQ
= 118 kΩ,
SYNCI/
SD
= V
DD
, V
DD
= 5.0 V
800 1000 1250 kHz
Nominal Free-Run Oscillation
Frequency
f
CLK-NOMINAL
COMPOSC = V
DD
, SYNCI/
SD
= V
DD
200 1000 kHz
Phase Adjustment Range
2
Φ
CLK
V
PHASE
= 0.13 V, f
SYNCI/
SD
= 1 MHz 50 Degrees
V
PHASE
= 2.3 V, f
SYNCI/
SD
= 1 MHz
330 Degrees
Phase Adjustment Default Φ
CLK
PHASE = open 180 Degrees
REFERENCE VOLTAGE
Reference Voltage
V
REF
I
REF
= 2 mA
2.35
V
I
REF
= 0 mA 2.37 2.47 2.57 V