ZHCSO42B December 2015 – July 2021 LM53625-Q1 , LM53635-Q1
PRODUCTION DATA
LM53625-Q1/LM53635-Q1 同步降压稳压器针对汽车应用进行了优化,能够提供 5V、3.3V 的输出电压或可调输出电压。LM53625-Q1/LM53635-Q1 可利用高级高速电路,在 2.1MHz 的固定频率下通过 18V 输入产生 3.3V 的稳压输出。LM53625-Q1/LM53635-Q1 采用创新型架构,在输入电压仅为 3.55V 时也可提供 3.3V 稳压输出。该器件针对汽车和性能驱动型行业客户进行了全方位优化。器件的输入电压高达 36V,容许的瞬态电压高达 42V,因此简化了输入浪涌保护设计。该器件采用通过汽车认证的 Hotrod QFN 可湿性侧面封装,可降低寄生电感和电阻,同时可提高效率、更大限度减小开关节点振铃,并大幅降低电磁干扰 (EMI)。开漏复位输出具有内置的滤波和延迟功能,可提供正确的系统状态指示。凭借这一特性,器件无需使用附加监控元件,这节省了成本和电路板空间。器件可在 PWM 和 PFM 两种模式之间无缝切换,并且低静态电流(3.3V 选项仅为 15µA)确保了其在所有负载条件下均可展现高效率和出色的瞬态响应。
器件名称 | 封装(1) | 封装尺寸 |
---|---|---|
LM53625-Q1 | VQFN-HR (22) | 5.00mm × 4.00mm |
LM53635-Q1 |
Changes from Revision A (May 2016) to Revision B (July 2021)
Changes from Revision * (December 2015) to Revision A (May 2016)
PART NUMBER | OUTPUT VOLTAGE | SPREAD SPECTRUM | PACKAGE QTY | WETTABLE FLANKS |
---|---|---|---|---|
LM53625AQRNLRQ1 | Adjustable | No | 3000 | Y |
LM53625AQRNLTQ1 | Adjustable | No | 250 | Y |
LM536253QRNLRQ1 | 3.3 V | No | 3000 | Y |
LM536253QRNLTQ1 | 3.3 V | No | 250 | Y |
LM536255QRNLRQ1 | 5 V | No | 3000 | Y |
LM536255QRNLTQ1 | 5 V | No | 250 | Y |
LM53625MQRNLRQ1 | Adjustable | Yes | 3000 | Y |
LM53625MQRNLTQ1 | Adjustable | Yes | 250 | Y |
LM53625NQRNLRQ1 | 3.3 V | Yes | 3000 | Y |
LM53625NQRNLTQ1 | 3.3 V | Yes | 250 | Y |
LM53625LQRNLRQ1 | 5 V | Yes | 3000 | Y |
LM53625LQRNLTQ1 | 5 V | Yes | 250 | Y |
LM53625NQURNLRQ1 | 3.3 V | Yes | 3000 | N |
LM53625MQURNLRQ1 | Adjustable | Yes | 3000 | N |
LM53625LQURNLRQ1 | 5 V | Yes | 3000 | N |
PART NUMBER | OUTPUT VOLTAGE | SPREAD SPECTRUM | PACKAGE QTY | Wettable Flanks |
---|---|---|---|---|
LM53635AQRNLRQ1 | Adjustable | No | 3000 | Y |
LM53635AQRNLTQ1 | Adjustable | No | 250 | Y |
LM536353QRNLRQ1 | 3.3 V | No | 3000 | Y |
LM536353QRNLTQ1 | 3.3 V | No | 250 | Y |
LM536355QRNLRQ1 | 5 V | No | 3000 | Y |
LM536355QRNLTQ1 | 5 V | No | 250 | Y |
LM53635MQRNLRQ1 | Adjustable | Yes | 3000 | Y |
LM53635MQRNLTQ1 | Adjustable | Yes | 250 | Y |
LM53635NQRNLRQ1 | 3.3 V | Yes | 3000 | Y |
LM53635NQRNLTQ1 | 3.3 V | Yes | 250 | Y |
LM53635LQRNLRQ1 | 5 V | Yes | 3000 | Y |
LM53635LQRNLTQ1 | 5 V | Yes | 250 | Y |
LM53635MQURNLRQ1 | Adjustable | Yes | 3000 | N |
LM53635NQURNLRQ1 | 3.3 V | Yes | 3000 | N |
PIN | I/O(1) | DESCRIPTION | |
---|---|---|---|
NO. | NAME | ||
1 | VCC | A | Internal 3.1-V LDO output. Used as supply to internal control circuits. Connect a high-quality 4.7-µF capacitor from this pin to AGND. |
2 | CBOOT | P | Bootstrap capacitor connection for gate drivers. Connect a high quality 470-nF capacitor from this pin to the SW pin. |
3 | SYNC | I | Synchronization input to regulator. Used to synchronize the device switching frequency to a system clock. Triggers on rising edge of external clock; frequency must be in the range of 1.9 MHz and 2.3 MHz. |
4 | PVIN1 | P | Input supply to regulator. Connect input bypass capacitors directly to this pin and PGND pins. Connect PVIN1 and PVIN2 pins directly together at PCB. |
5, 6, 7, 8 | PGND1 | G | Power ground to internal low side MOSFET. These pins must be tied together on the PCB. Connect PGND1 and PGND2 directly together at PCB. Connect to AGND and system ground. |
9 | SW | P | Regulator switch node. Connect to power inductor. |
10, 11, 12, 13 | PGND2 | G | Power ground to internal low side MOSFET. These pins must be tied together. Connect PGND1 and PGND2 directly together at PCB. Connect to AGND and system ground. |
14 | PVIN2 | P | Input supply to regulator. Connect input bypass capacitors directly to this pin and PGND pins. Connect PVIN1 and PVIN2 pins directly together at PCB. |
15 | AVIN | A | Analog VIN, Connect to PVIN1 and PVIN2 on PCB. |
16 | FPWM | I | Do not float. Mode control input of regulator. High = FPWM, low = Automatic light load mode. |
17 | NC | — | No internal connection |
18 | EN | I | Enable input to regulator. High = on, Low = off. Can be connected to VIN. Do not float. |
19 | RESET | O | Open drain reset output flag. Connect to suitable voltage supply through a current limiting resistor. High = regulator OK, Low = regulator fault. Goes low when EN = low. |
20 | AGND | G | Analog ground for regulator and system. All electrical parameters are measured with respect to this pin. Connect to PGND on PCB |
21 | FB | A | Feedback input to regulator. Connect to output voltage node for fixed VOUT options. Connect to feedback voltage divider for adjustable option. |
22 | BIAS | P | Input to auxiliary bias regulator. Connect to output voltage node. |
PARAMETER | MIN | MAX | UNIT |
---|---|---|---|
VIN (AVIN,PVIN1 and PVIN2) to AGND, PGND1 and PGND2(2) | –0.3 | 40 | V |
SW to AGND, PGND(3) | –0.3 | VIN + 0.3 | V |
CBOOT to SW | –0.3 | 3.6 | V |
EN to AGND, PGND(2)(4) | –0.3 | 40 | V |
BIAS to AGND, PGND | –0.3 | 16 | V |
FB to AGND, PGND | –0.3 | 16 | V |
RESET to AGND, PGND | –0.3 | 8 | V |
RESET sink current(5) | 10 | mA | |
SYNC to AGND,PGND(2)(4) | –0.3 | 40 | V |
FPWM to AGND,PGND(4) | –0.3 | 40 | V |
VCC to AGND,PGND | –0.3 | 3.6 | V |
Junction temperature | –40 | 150 | °C |
Storage temperature, Tstg | –40 | 150 | °C |